Invincibility:
Press Up, Right, Down, Left, Up, Down, Right, Up, Left, Down during game play. Note: This code must be re-activated upon entering another level.

Unlimited ammunition:
Press Left, Right, Up, Right, Down(2), Right, Up, Left, Down during game play. Note: This code must be re-activated upon entering another level.

stats:

sheriff:
Bullet Damage:high
Reload time : slow
movement:medium
fire speed :medium

prisoner:
bullet damage:medium
reload time : fast
movement:fast
fire speed:fast