If the game is too hard for you, you can simply enter the konami code at the title screen. If you don't know what the konami code is, look it up on google, you should be amused.

To access the secret gallery simply type in at the title screen input:
DOWN, RIGHT, UP, LEFT, Y, B

To unlock the secret character input:
E621SUCKS

Play Cracklevania 2: Rondo of Ejaculate