First person view  -  While playing a game, hold Triangle + Square + Start. The game will pause. Press Start to resume the game with the
new camera view. For the Japanese version of the game, hold Triangle + Square + Select.

Fixed camera view  -  While playing a game, hold Circle + X + Start. The game will pause.Press Start to resume the game with the camera
fixed at the pre-location. For the Japanese version of the game, hold Circle + X + Select.

Return to default view  -  To return to the default view, pause the game, then press Start to resume the game. For the Japanese version of
the game, press Select instead of Start.

Extra lock-ons  -  Equip your core with the laser sword and missiles. Then, begin a game and approach an enemy from a safe distance.
Draw the sword and press Up, Down, R1, L1 to gain an extra lock-on. Note: Up to six additional lock-ons may be accumulated.

Alternate emblem backgrounds  -  Highlight an emblem and enter the edit screen. Then, hold L1 + R1 and press Select.

Modify pilot name  -  Highlight the "A.C. Name Entry" option, hold Select, and press X.

Continue from Armored Core  -  Successfully complete the original Armored Core and save the game. Then, load that game into Armored Core: Project Phantasma to start with your previously obtained parts and money.

Game Shark Codes:

North American Version

Infinite Money:
8003BCD2 0020

Infinite Energy:
80042506 CB20

Infinite Armor:
801E2F40 8800

Infinite Ammo Right Arm:
800427D8 03E7

Infinite Ammo Back Weapon:
80042816 0064  80042854 0064

Have All Heads:
800342F0 0101  800342F2 0101  800342F4 0101  800342F6 0101  800342F8 0101

Have All Cores:
80034302 0101  80034304 0502

Have All Arms:
3003430D 0001  8003430E 0101  80034310 0101  80034312 0101  30034314 0001  30034319 0001  8003431A 0101
8003431C 0101  8003431E 0101  80034320 0101

Have All Legs:
30034325 0001  80034328 0101  8003432A 0101  3003432D 0001  3003432F 0001  80034330 0101  80034332 0101  30034335 0001
80034336 0101  30034338 0001  8003433A 0101  3003433C 0001  80034340 0101  30034343 0001

Have All Generators:
3003434D 0001  8003434E 0101  80034350 0101  80034352 0101  80034354 0101

Have All FCS:
8003435C 0101  8003435E 0101  80034360 0101  80034362 0101  80034364 0101

Have All Optional Parts:
8003436C 0101  8003436E 0101  80034370 0101  80034372 0101  80034374 0101  80034376 0101

Have All Boosters:
3003437F 0001  80034380 0101  80034382 0101  80034384 0101

Have All Back Weapons:
3003438D 0001  8003438E 0101  80034390 0101  80034392 0101  80034394 0101  80034396 0101  80034398 0101  8003439A 0101
8003439E 0101  800343A0 0101  800343A8 0101  800343AA 0101  800343AC 0101  800343AE 0101  300343B0 0001 
800343B4 0101  800343B6 0101  800343B8 0101  800343BA 0101  800343C0 0101  300343C2 0001

Have All Right Arm Weapons:
300343C9 0001  800343CA 0101  800343CC 0101  800343CE 0101  800343D0 0101  800343D2 0101  800343D4 0101
800343D6 0101  800343D8 0101  800343DA 0101

Have All Left Arm Weapons:
800343DC 0101  800343DE 0101  300343E0 0001