Note: This game is also known as - Akumajou Dracula: Gallery Of Labyrinth

Boss Rush bonuses - Complete the indicated Boss Rush course under the listed time to get the corresponding bonus.

Birthday cake - Set your birthday in the DS system settings to the current date. Then, go to Vincent the shopkeeper. A birthday cake that costs 3,000 will be offered for sale.

Completion bonuses  -  Successfully complete the game with the best ending to unlock the Hard difficulty setting, Boss Rush Courses 2 and 3, Richiter and Sisters mode (start a new game with a different duo), Sound mode, and New Game+.

Defeating Legion - While fighting Legion, become Charlotte and use the Ice Needle spell. It should take two to four fully charged Ice Needle spells to take out a section. If you have the Volcano Duel Crush, use it to take out Legion from the top platform.

Duplicate quest rewards  -  Successfully complete a quest, then talk to Wind to display the quest menu. Press A(2), then when you hear the reward chime, press Start to exit the quest menu. You will now have the quest reward, and the quest should still be uncleared from the list. Complete the quest again to get the reward again. Repeat this as many times as desired.

English voiceovers (Japanese version)  -  At the main menu, hold L and press A to enable English voiceovers. If you entered the code correctly, Jonathan will say "showtime".

Fully-Powered Vampire Killer - Use Sanctuary on Stella and Loretta, then speak to them afterward to start an optional boss battle, then complete that battle.

Hidden Vincent dialogue  -  Play as Charlotte and stand in front of Vincent. Hold Up until he begins speaking.

Magus Ring - Successfully complete all of Wind's quests to get the Magus Ring. It regenerates your magic points quickly.

"Richiter" and "Sisters" mode Start a new game with a different duo!
Boss Rush Courses 2 and 3 Selectable from the Boss Rush menu
Hard difficulty You can place a max level cap here too
New Game + Start a new game on your clear data
Sound Mode Selectable at the main menu

Secret Vincent Dialogue - Play as Jonothan and hold up while standing by Vincent. He will say something like "What! Dont tell me...That girl!". Play as Charlotte and do the same thing and he will say something like "What! They killed Jonothan?". Play as both characters and repeat it and he will say something about Jonothan and Charlotte as a couple.

Unlock Old Axe Armor - Kill 1000 (or more) Old Axe Armor (Monster No. 92). Then SAVE. You need to SAVE in order for the Kill Count to register. Now when you start a New game. You can choose OLD AXE ARMOR as a player character.

Successfully complete the game under the hard difficulty setting to unlock a permanent +50 Luck bonus.

Unlockable: How to Unlock:
Astral Ring Boss Rush Course 1 in 1 minute.
Illusion Fist Boss Rush Course 2 in 5 minutes.
Invisible Cape Boss Rush Course 1 in 3 minutes.
Record 1 Boss Rush Course 2 in 3 minutes.
Record 2 Boss Rush Course 3 in 3 minutes.
Scout Armor Boss Rush Course 3 in 5 minutes.
Hard mode bonuses

Complete Hard mode with the indicated level cap to unlock the corresponding bonus.

Unlockable: How to Unlock:

Konami Man and +50 Strength Defeat Hard Mode with Level 1 Cap.
Twin Bee and +50 Intelligence Defeat Hard Mode with Level 25 Cap.
Vic Viper and +50 Luck Defeat Hard Mode with Level 50 Cap.