Beat the game with all four characters.
Unlock Mr. Chou:
Sometimes after a stage, you'll see Mr Chou on a random level, go to that stage
and you'll fight him. Beat him to unlock him.
In the first level after the shopping district near the underground car tunnel,
there will be a star on the wall. When you approach, a hidden doorway will open,
this shop has some of the best items in the game.
Unlockable Video Rewards:
If you pay off your $500 fine at the video store, you can purchase the following
items for $4.95:
The Mystical Head: Extra life, maximum of nine.
Seven Shaolin Masters: Gives +100 XP, +10 DEF, +10 SPD, +10 WP, +10 STR.
Alien VS T-Rex: Gives +20 STR.
Alone and Disturbed: Gives +1,500 experience points.
I Love Your Boyfriend: Gives +320 XP, +15 DEF, +15 WP.