Obscure [cheats]

Video sequences
Successfully complete the game to unlock a making of, behind the scenes, and two music videos.

Alternate costumes
Successfully complete the game, then start another game in special mode. Note: Only characters that survived will have an alternate costume.

Laser-sight pistol
Successfully complete the game under the normal or higher difficulty setting, then start another game in special mode. The first available gun will now be a pistol with a laser sight.

Morgenstern bat
Successfully complete the game, then start another game in special mode.

Special mode
Successfully complete the game.

Alternate menu background
Successfully complete the game to unlock an alternate menu background.

Gallery 1
Successfully complete the game on the hard difficulty setting to unlock Gallery 1.

Gallery 2
Successfully complete the game in special mode to unlock Gallery 2.