King of Fighters: Maximum Impact - Maniax Game Cheats

Alternate costumes:
Successfully complete a challenge in challenge mode.

Cemetery stage:
Successfully complete all challenge mode missions.

Esaka stage:
Successfully complete 25 challenge mode missions.

Fight as Duke:
Successfully complete story mode as Soiree and Alba.

Fighter profiles:
Successfully complete the game to unlock the corresponding character in the profile screen. Note: You can now also select their rigging model in their profile and use it during game play.

Infernal Gate stage:
Successfully complete 25 challenge mode missions.

Mai: Defeating Duke:
Fighting Duke as Mai can be difficult. However, if you keep using her combos, such as Super Deadly Ninja Bees and Windwill Waster and do not allow Duke to power up any of his most devastating attacks, you will defeat him. Note: This may require a lot of practice; use the practice mode until you are skilled with Mai's combos. Defeating Duke in story mode will unlock Mai's profile and rigging model.

Show Time stage:
Successfully complete 10 challenge mode missions.