Bonus weapons - Successfully complete the indicated task to unlock the corresponding weapon:

Desert Eagle, Long Barrel: Get the Fox Emblem.
Patriot Future Assault Weapon : Successfully complete the game with a "Big Boss" rank. This weapon has infinite ammunition.
Race Gun pistol: Successfully complete the game in Single Player mode.
Solar Gun: Collect the five statues (the four Battle Beauties and Frog Soldier/Haven Troopers) with non-lethal means on their respective idols.
Thor 45-70: Get the Fox Hound Emblem.
World War I pistol: Get the Hound Emblem.

Bonus ammunition - Successfully complete the game to unlock the following ammo for purchase from Drebin:

Emotive Cry
Emotive Laughter
Emotive Rage
Emotive Scream

Smoke Grenade Blue
Smoke Grenade Green
Smoke Grenade Red
Smoke Grenade Yellow

Bonus equipment - Successfully complete the indicated task to unlock the corresponding piece of equipment:

Bandanna: Successfully complete the game in Single Player mode without killing anyone, including Bosses. Alternately, purchase it from Drebin for 5 million Drebin Points after starting another game session after completing the game. This item gives you infinite ammunition.

Digital Camera: It is found in the Nomad vehicle during the mission intermission. Note: It will contain bonus photos if you wait until Act 4 to get the camera.

Scanning Plug S: Log more than ten hours of online play time on the same profile as your single player game to unlock it for purchase from Drebin.

Stealth Item: Successfully complete the game in Single Player mode without instigating an alert. Note: You can trigger a caution.

Bonus face paint - Successfully complete the indicate task to unlock the corresponding face paint:

Big Boss: Get the Big Boss Emblem. When you wear this mask, it causes enemies near you to cower in fear and/or run away screaming.
Crying Wolf: Defeat Battle Beauty (human form) Crying Wolf by non-lethal means.
Drebin: Acquire and keep over 60 weapons.
FaceCamo: Defeat Battle Beauty Laughing Octopus. This mask functions like the Octocamo suit, but just on your head.
Laughing Octopus: Defeat Battle Beauty (human form) Laughing Octopus by non-lethal means.
Metal Gear Solid Snake: Start the Shadow Moses level.
Otacon: Shock or run into Otacon at high speed with Metal Gear Mk. II during an interactive mission brief.
Raging Raven: Defeat Battle Beauty (human form) Raging Raven by non-lethal means.
Raiden A: Shock or run into Sunny at high speed with Metal Gear Mk. II during an interactive mission brief.
Raiden B: Shock or run into Naomi at high speed with Metal Gear Mk. II during an interactive mission brief.
Roy Campbell: Shock or run into Campbell at high speed with Metal Gear Mk. II during an interactive mission brief.
Screaming Mantis: Defeat Battle Beauty (human form) Screaming Mantis by non-lethal means.
Young Snake: Start the Eastern Europe level.
Young Snake with bandana: Start the Eastern Europe level.

Bonus costumes - Successfully complete the indicate task to unlock the corresponding costume:

Altair's Rags (Assassin's Creed): Get the Assassin's Emblem.

Business Suit: Successfully complete the game.

Civilian clothes: Start the Eastern Europe level.

Metal Gear Solid optical camo: Successfully complete the game in Single Player mode without going into alert phase. Alternately, purchase it from Drebin for 5 million Drebin Points after starting another game session after completing the game. This camo makes you completely invisible.

Middle East militia disguise: Go to the Middle East militia safe house.

South American militia disguise: Go to the South American cove valley village.

iPod songs - Successfully complete the indicated task to unlock the corresponding song on Snake's iPod. Certain songs have an additional secret effect when played during the game.

Beyond the Bounds: In Act 4: Shadow Moses, Tank Hangar, after power is restored, return to the upper catwalk, and explore all the rooms. This song increases stun damage done by Snake from non-lethal weapons.

Big Boss: Get the Big Boss Emblem. This song increases stun damage and Snake's accuracy.

Bio-hazard: In Act 3: Europe, Midtown, hold-up a resistance soldier and body search him. This song causes soldiers held by Snake to scream.

Destiny's Call: Received randomly from an allied or neutral militia or rebel soldier after Snake gives them a healing item. This song causes soldiers held by Snake to become enraged.

Flowing Destiny: In Act 4: Shadow Moses, Canyon, before leaving the canyon area, examine the rocky walls for a hole hiding the song. This song causes soldiers held by Snake to weep.

The Fury: In Act 2: South America, Cove Valley Village, search inside the fire-ravaged house. This song causes soldiers held by Snake to become enraged.

MGS 4 Love Theme/Action: Received randomly from an allied or neutral militia or rebel soldier after Snake gives them a healing item. This song causes soldiers held by Snake to weep.

Opening - Old L.A. 2040: In Act 4: Shadow Moses, Nuclear Warhead Storage B2, input "78925" into Otacon's lab computer. This song increases Snake's accuracy.

Policenaughts Ending: In Act 4 Shadow Moses, Nuclear Warhead Storage B2, enter "13462" into Otacon's lab computer. This song causes soldiers held by Snake to fall asleep when touched.

Rock Me: In Act 2: South America, Confinement Facility, search the island in the south-eastern quadrant. This song increases the amount of life recovered from items and other means.

Sailor: In Act 2 South America, Vista Mansion, look between the east wall and a cargo container. This song increases the amount of life recovered from items and other means.

Show Time: Received randomly from an allied or neutral militia or rebel soldier after Snake gives them a healing item. This song causes soldiers held by Snake to scream.

Snake Eater: Get all 40 game clear Emblems. This song increases the amount of life recovered from items and other means.

Subsistence: Play one game of Metal Gear Online, starting the match with at least two players. This song increases Snake's accuracy.

Emblems - Successfully complete the indicated task to unlock the corresponding Emblem:

Ant: Shake 50 enemies for items.

Assassin's: Successfully complete the game in Single Player mode with killing more than 50 enemies with the knife, having over 50 CQC holds, and getting discovered less than 25 times.

Bear: Choke 100 enemies to death.

Bee: Use the Scanning Plug S or Syringe on 50 enemies.

Big Boss: Successfully complete the game in Single Player mode on the hardest difficulty without dying, instigating no alerts, killing no enemies (including Bosses), using no life recovery items, using no stealth suit or bandanna special items (can possess, but not activate), and with a completion time of less than 5 hours.

Blue Bird: Give friendly soldiers 50 items.

Eagle: Get 150 headshots.

Fox: Successfully complete the game in Single Player mode on the Naked Normal or higher difficulty without dying, instigating no more than five alerts, killing no enemies (including Bosses), using no life recovery items, using no stealth suit or bandanna special items (can possess, but not activate), and with a completion time of less than 6 hours.

Fox Hound: Successfully complete the game in Single Player mode on the Big Boss Hard or higher difficulty without dying, instigating no more than three alerts, killing no enemies (including Bosses), using no life recovery items, using no stealth suit or bandanna special items (can possess, but not activate), and with a completion time less than 5 hours and 30 minutes.

Frog: Dive or roll 200 times.

Gecko: Press against walls for a total of one hour.

Giant Panda: Successfully complete the game after 30 cumulative hours of game play.

Gibbon: Hold up 50 enemies.

Hawk: Be admired by 25 friendly soldiers.

Hog: Get 10 combat highs.

Hound: Successfully complete the game in Single Player mode on the Naked Normal or higher difficulty without dying, instigating no more than three alerts, killing no enemies (including Bosses), using no life recovery items, using no stealth suit or bandanna special items (can possess, but not activate), and with a completion time less than 6 hours and 30 minutes.

Hyena: Pick up 400 dropped weapons.

Inch Worm: Crawl on the ground for a total of one hour.

Little Gray: Collect all 69 weapons.
Lobster: Crouch for a total of 2 hours and 30 minutes.

Rabbit: Look at 100 Playboy pages.

Password option - Successfully complete the game in Single Player mode to unlock the "Password" option in the "Extras" menu. There are no known passwords currently, but keep checking back.

Big Boss Extreme mode - Successfully complete the game in Single Player mode to unlock the Big Boss Extreme difficulty.

Bonus combat vests - Successfully complete the game in Single Player mode to unlock new combat vests.

Replay bonus - Successfully complete the game in Single Player mode, and create a cleared saved game file. Start another game session, and encounter Metal Gear II in Act 1 to get the Drebin Points, weapons, ammunition, items, and special items from your original game.

Alternate ending - If you fight Mantis with a Sixaxis controller, the ending is different than if you were using a DualShock 3 controller.

Otacon bonus - In Act 4: Shadow Moses, when at Otacon's office, he will ask you for the code. Input "14893" to hear the familiar monkey sound and get 100,000 Drebin Points points. Note: This is a reference to the Codec frequency (148.93) that Drebin calls you on. Alternately, input "78925" or "13462" as a code to get an iPod song.

Infinite Drebin Points - First, acquire the drum can. You do this by finding the soldier that is hiding in the can, and using it as a bathroom. After that, go up ahead a few feet, where you will see three crates. When you have gone past them, you will see just two crates. You will also see about three rebel soldiers fighting. One is carrying an RPG and the other two have machine guns. They will die and respawn continuously. You will have a chance to pick up the RPG after the soldier has died three times. Do so because each RPG is worth 6,000 Drebin Points. The important thing is to stay anywhere behind the two crates, otherwise the trick will not work. Going further than the two crates will stop the respawning loop of the soldiers dying. The only way to get the RPG without breaking the respawning loop is to use the Mk II.

Cheaper Drebin prices - Set the PS3 system date to a Wednesday or Saturday, and Drebin will have cheaper prices.

Statue locations - The statues required to unlock the Solar Gun can be found at the following locations:

Frog: In Act 1: Middle East, Advent Palace garage, atop the Nomad vehicle.
Octopus: In Act 2: South America, in the Research Lab Boss room, upper right room.
Raven: In Act 3: Europe, on the top floor of the human phase of the Boss fight.
Wolf: In Act 4: Shadow Moses, behind Snake's starting spot in the human phase of the Boss fight.
Mantis: In Act 5: Outer Heaven, near the northern-most door during the human phase of the fight.

Audio flashbacks - Experience the following audio flashbacks to get 1,000 Drebin Points for some of them:

Find the crop circle near the river while tracking Naomi in Act 2 after the Laughing Octopus fight (flashback of the Colonel acting strangely in Metal Gear Solid 2).

Find the Hind (flashback of the end of the Hind confrontation).

The middle of the helipad (flashback of Hind D speech).

The small shack to the West of the area (flashback of "A surveillance camera?!").

Enter through either of the vents instead of the door (flashback Master Miller's introduction).

Inside Otacon's lab (flashback of Grey Fox's introduction).

Stand near the tank hangar's door (flashback of Meryl's "Where I can see you" speech).

Stand in the decontamination room before the hallway to Otacon's office (flashback of Cyborg Ninja fighting Genome Soldiers).

Stand in the filled-in trench leading up to the Comm Towers (flashback of Meryl telling Snake to continue without her).

Climb as far as you can up the Comm Tower nearest where you enter and walk around (flashback of beginning of the Hind confrontation).

In front of the other Comm Tower, facing the exit (flashback of Otacon's "What are you fighting for?" speech).

Stand near the door leading back to the room where you fought Vulcan Raven (flashback of Raven's final speech).

In Shadow Moses, near the elevator (flashback of Infiltration speech).

Return to the crashed Hind chopper after the Crying Wolf fight (flashback of Liquid Snake being shot down).

Aim the Mk.23 SOCOM while at Shadow Moses (Snake will say "Just like old times").

Move the camera view directly overhead and move around (Snake will say "Just like old times").

Control opening commercials - When starting a new game, you are shown two random commercials. You can change the channel by pressing Up and Down to get new commercials. There is also a Hideo 1 and Hideo 2 channel, which are like Video 1 and 2.

At the start of the game when the commercials are on, you can press X to cycle through different channels. You can see a segment where David Hayter is being interviewed wearing a Solid Eye.

Control intermission sequences - During an intermission sequence, press D-pad Up to zoom the camera in, then use the Right Analog-stick to pan the camera around. The harder you press Up, the more zoomed in the camera view. Also, some intermission sequences have prompts to see it through Snake's eyes by holding L1 (look for the icon at the top left of the screen) or view flashback images by repeatedly tapping X when a prompt appears (look for the icon at the top right of the screen). You can also pause an intermission sequence by pressing Start.

Intermission sequence extras - During the following intermission sequences, press L1 to see secret events:

Laughing Octopus: Laughing Octopus quickly leaps away outside the window during one of the L1 sequences when you first meet Naomi.

Naomi upskirt: In Act 2, when Snake's talking to Naomi and drops his cigarette, use the hidden L1 option to look up her skirt.

Psycho Mantis' ghost: During the first intermission sequence with Beauty and the Beast, after using the option to look through L1, look to the left to see the ghost of Psycho Mantis.

Listening to radio during briefings - During the mission briefings, touch the the radio on the table upstairs with the Mk II, and it will play music.
By switching the radio on and off in Act 4, you will get different songs, including a remixed version of the "Love Theme" from Super Smash Bros. Brawl.

Reset Octocamo appearance - Shake the Sixaxis controller to return Snake's Octocamo to its neutral (black and blue) appearance.

View motion capture names - When a character is introduced for the first time, press R2 to view the name of that character's motion capture actor instead of the voice actor name for that character.

Reducing stress - Sit in a box to reduce stress faster.

Regaining Psyche- When Snake's Psyche gauge decreases during intermission sequences, repeatedly tap X to regain it.

Shoot from inside a dumpster - There are dumpsters throughout the game which you can use to hide. Move in front of them, and press Triangle when the prompt appears. Once inside, if you have a handgun, The Operator for example, you can hold L1 to lift up the lid of the dumpster and aim your gun from inside.

Faster iPod navigation - Instead of rotating the Right Analog-stick to control the iPod, use Triangle, Square, Circle, and X.

Secret ghost photographs - Equip the Sorrow Doll, and have the camera from the Nomad. You can use that camera to find thirty ghosts in Shadow Moses. After taking pictures of them, they can be viewed in the photo album with a new option.

In Shadow Moses, when you return to Otacon's office to shut down security and turn on the power, take a photograph of the area to the left of the Policenauts poster. When viewed, there will be a superimposed image of Hideo Kojima's face.

Take a picture of the wolves after the Crying Wolf battle. Sniper Wolf's face will appear in the corner.

Secret Sunny and Naomi pictures - Do not pick up the camera during the briefing when it first becomes available. Wait until Act 4 to get the camera, and it will have some funny pictures of Naomi and Sunny playing around in the kitchen.

Hidden development team autographs - While tracking Naomi, get to where there is a PMC soldier standing next to a claymore. Move northeast from there to find a metal plate on the ground with signatures and handprints from the game's developers. Note: Lay down on it to get the handprint design for your camouflage. Register it to memory, and you can use it whenever desired.

Hidden crop circle - When you are tracking Naomi's footprints in Act 2 after the Laughing Octopus fight, you will arrive to a river. Instead of crossing the river, look to your left. You will see another set of footprints. Follow these, and they will lead you to a crop circle where you will hear some strange dialog by the Colonel about an alien abduction.

Vomiting Snake - If you kill a large enough number of enemies in a conflict zone, you will hear Liquid from Metal Gear Solid say "You enjoy all the killing, that's why!", and Snake will vomit.

Posing as statues - You can step up on statue pedestals, and press Triangle to assume various poses. With one of the statues, you will grab its crotch. Do this several times, and that part of the statue will break off.

Beauty And The Beast preview - In Act 1 when in the underground hanger/cave, you can use the Mk II to listen to a wounded PMC soldier's conversation. He will talk about the Beauty And The Beast group before you actually meet them.

Posing Beauties - After defeating any of the four Beauties, there is a second round where they walk towards you, trying to grab Snake. During this phase, run from them for three minutes, and the screen around you and the Beauty will turn white. Take out the digital camera you obtained from the mission briefings. The Beauty will stop chasing you and do sexy poses for your camera.

Play the "Oishii ChuhanSeikatsu" Japanese pop song on your iPod while fighting a Beauty. She will start dancing. If you aim a camera at her, she will pose.

Beauty And The Beast magazine models - You can buy a magazine with pictures of the models that the Beauty And The Beast unit were based on from Drebin.

Japanese models on TV - Flick the TV remote with the Mk II to get Japanese models to appear on the television.

Barely dressed women - Flick the remote for the screen Campbell talks to you on with the Mk II to see pictures of ladies in their underwear.

Naomi's cleavage - When Naomi is in the Nomad and on the computer talking, use the Mk II to look at Otacon's computer. His webcam is focused on Naomi's cleavage.

Alternate Rose's shirt - During the third playthrough of the game, when you first meet Rose she will be wearing a new shirt.

Shake Rose's breasts - When you speak with Rose on the Codec, shake the Sixaxis to make her breasts move.

Playboy magazine - To look through the Playboy magazine, press R1, then go into first person view. Then, hold L1 and press Circle to go through the pages.

Akina Minami posters - There are two posters of Akina Minami in the Vista mansion. Look at them in first person view, and Snake will say her name and his Psyche gauge will increase.

Remove frosty breath in Multiplayer mode - When playing in stages where your breath frosts, have Snake play dead while prone. His frosty breath will no longer be seen by others.

Easy Gecko kill - When you are in the basement lab at Shadow Moses and the Gecko appears, send the Mk II to the electric console to the right of the elevator. Note: This is the same console that was destroyed with the rocket in the original Metal Gear Solid. Use the Mk II to reactivate the electric floor and destroy the Gecko.

Defeating Vamp - In the first part of the battle against Vamp, after you get his health low enough, he will fall down. As he gets up, grab him in a CQC hold, and inject him with the syringe that you obtained earlier. This will disable his Nanites and make him mortal.

Long game advisory - If you complete a chapter after 4 a.m., a message will come up during the install screen (Snake smoking), suggesting that you get up and do some stretches, and saying that you have been playing awhile.

Mystery man - When tailing a resistance member, if you look behind Snake, you will occasionally notice a man with a hat and trenchcoat also tailing him. This is how the Scarabs found the hideout. If you try to shoot him, he will duck away around the corner and disappear.

Dancing Sunny - Play the "Oishii ChuhanSeikatsu" Japanese pop song on Snake's iPod. During that song, press Start to see Sunny dancing at the bottom left corner.

Liquid Ocelot kiss - At the third part of the final fight, when Liquid Ocelot grabs Snake by the neck, allow the controller to idle. After some time, Liquid Ocelot will kiss Snake on the cheek.

After death messages - After dying, call Rose to hear a conversation about Snake having dreams of being killed or a comment from Snake saying that he feels like he has died once before.

Controlling briefing projector - During the Act 5 mission briefing, use the Left Analog-stick to change the projection's height on the screen. This will make some of the attendees angry.

Trailing wolves - Tranq Crying Wolf, and the wolves in that area will follow you.

Attacking wolves - In Act 4, kill one of the wolves after you defeat Crying Wolf. The others will attack you. Call Otacon, and he will wince. Call Rose, and she will tell you that animal cruelty is the first sign of criminal behavior, and says that she will have you psychologically assessed if you continue to kill them.

FROG soldier reaction to searches - Hold up a FROG soldier, and body search them. When you would normally ball crush a male prisoner, they will say "You men are all the same", "You're disgusting!", or "Ugh" and kick you.

When you search a FROG soldier when they have no items, she will giggle as if ticklish.

When you search a FROG soldier and touch her chest, sometime she will moan or say "You're pretty good at this".

Militia soldier execution - Sneak through the first part after the opening, and go through the buildings. At the building to the right of where the APC shows up, crawl under the rubble. You will see a militia soldier get brutally shot after pleading for his life.

No smoking sign - Whenever Snake is smoking there is always a no smoking sign behind him.

Urination - When tracking Naomi in Act 2, look to the right when crossing the river to see a guard relieving himself.

Follow the resistance member in Act 3 to see him urinating in the fountain in the small park.

In the central park during Act 3, there is a statue that Snake can interact and imitate. Stay in that pose until a resistance member appears, and he will urinate on you.

Hideo Kojima references - When Snake hides from the two Irvings next to the box of watermelons, the box reads "No Place For Hideo".

You can see a ghost image of Hideo Kojima in Otacon's lab using the camera. It is between Policenauts and the poster that from a distance reads "Final Fantasy VI".

On the computer, the term "Video 2" is called "Hideo 2".

Metal Gear Solid references - During the Act 1 FROG attack sequence, attack Meryl. She will say the same things she said when you attacked her in Metal Gear Solid.

You fight Crying Wolf in the same area you fought Sniper Wolf.

You can find the Hind D still in the Snowfield where you fight Crying Wolf.

During the Mantis fight, switch your controller ports when your television switches to "Hideo 2". Otacon will come on the Codec and notify you that the trick does not work twice. You will also get a suggestion about destroying the bust.

After you die during the final Boss battle and select "Exit", it quickly changes to "Exist". Liquid Ocelot says "Not yet Snake, it's not over yet" and it moves the pointer back to "Continue". This is a reference to a quote by Liquid in the original Metal Gear Solid.

Metal Gear Solid 2 reference - Call Rosemary with a ration equipped to see a reference to a sequence that happened in Metal Gear Solid 2, when Raiden calls Snake on the Codec with a ration equipped and comments about Rose's cooking.

Metal Gear Solid 3 reference - When Drebin and Little Grey jump off of the Stryker, they will land in Naked Snake's pose from Metal Gear Solid 3, when he first arrives for the Operation Virtuous mission.

Metal Gear Solid: The Twin Snakes - If you stare at Meryl's breasts, she will blush similarly to how she did in Metal Gear Solid: The Twin Snakes.

Metal Gear Solid series references - At the very beginning of Act 1 when Sunny's cooking eggs, she says "Only two eggs? Solidus must've taken the day off."

Look at the two puppets dangling from Screaming Mantis. The two puppets appear to be Psycho Mantis and The Sorrow from previous Metal Gear Solid games.

The three chickens in the Nomad are named Solid, Liquid, and Solidus.

When Snake and Naomi talk about war changing and how it used to be "just a game", all of the Metal Gear Solid titles appear in an indexed list. After MGS4, there are a few boxes titled "In Production."

The rubber duck in the upper gantry of the Nomad can also be found in Capture The Flag mode in Metal Gear Online; in the GA-KO camouflage in Metal Gear Solid 3; and floating in the flooded Shell Core in Metal Gear Solid 2.

Otacon has a model of Rex beside his computer.

The Naked Gun reference - Drebin sells laundered guns, called "Naked Guns". Drebin's name is a reference to Frank Drebin from The Naked Gun movies.

Policenauts reference - One of the backgrounds on Otacon's computer is a scene from Policenauts.

PlayStation 3 references - In the Act 1 briefing, there is a PS3 on the second floor of the plane.

During the Act 1 briefing, go upstairs on the Nomad to see Sunny unpacking her PS3 and PSP.

In the Act 2 briefing, there is a PlayStation 3 on the table.

After you defat Crying Wolf in Act 4, Otacon will call you as you enter that building and tell you to change discs. He then catches himself and starts talking about Blu-Ray and the PlayStation 3.

When you send out the Mk 2, look over Snake's shoulder by tilting the camera. He is using a PlayStation 3 controller to control it.

If you use a Sixaxis controller against Psycho Mantis he says, "What? No vibration!" and the flashbacks show the Sixaxis.

PSP reference - During the Act 2 briefing, Sunny is playing a PSP. The game is Penguin Adventure, a 1986 title for the MSX computer system, which was Hideo Kojima's first game.

Snatchers reference - The suit Snake wears in Act 3 is a homage to Gillian Seed, from Snatchers.

Star Wars reference - In the Act 5 briefing, while Mei Ling is explaining the situation to everyone she says something about it being an impenetrable fortress or something similar. Snake then says, "He has his very own Death Star."

Zone Of The Enders reference - When you look at the briefing scene, Otacon's computer desktop picture is the main character from Zone Of The Enders, another game directed by Hideo Kojima.

Weapons list - The following weapons are available in the game:

Pistols

1911 Custom

Desert Eagle (originally used by Meryl)
Desert Eagle Long Barrel

Five Seven (gun used by Snake when he infiltrated Galuade)

Glock 18C
GSR (.45)

Mk 2 Pistol (Tanq)
Mk.23 SOCOM (Snake's main handgun from Metal Gear Solid)

Operator (Colt .45 with extended barrel)

PMM
PSS

Race Gun (fires ricochet bullets)

Solar Gun (causes enemies to drop weapons and does extreme damage to Vamp)

Thor .45-70 (rifle pistol)
Type 17 (broom handle machine pistol)

Sub-machine guns

Bizon
M-10
MP5sd2
Mp7
P90
Patriot (The Boss' weapon; has unlimited ammunition)
VZ. 83 Skorpion

Assault rifles

Ak102
An94
FAL Carbine
G3A3
M4 Custom
Mk.17
XM8

Grenade launchers

MGL-140
XM25

Rocket launchers

Fim-92A (Stinger)
Javelin
M72A3
RPG-7

Sniper weapons

DSR-1
Heavy machine guns
HK21E
M14EBR
M60E4
M82A2
MK.46 Mod 1
Mosin-Nagant (The End's sniper rifle)
PKM
RAIL GUN
SVD
Tanegashima (old flint lock that is very slow to reload, 33% of hits causes a whirlwind that carries off enemies making them drop items)
VSS

Shotguns

M870 Custom
Saiga-12
Twin Barrel

Weapon modifiers

Dot sights
Flashlights
Fore grips
Grenade launchers
Laser sights
Masterkey (under barrel shotgun for assault rifles)
Scopes
Suppressors

Others

C4
Chaff grenade
Claymore
Grenade
Knife
Molotov cocktail
Sleeping gas mine
Sleep gas satchel charge
Smoke grenades (yellow, red, blue, green)
Stun grenade
White phosphorus grenade