When in arcade mode get game over lots of times every game over you get a credit soon you will have enough to complete arcade mode
Submitted by Neil Mcquade
To get Max Life, you have to beat the game once.
Submitted by Alex Reynoso
Complete the story mode in under 30 minutes. The "Infinite Sub-Weapon Ammo" bonus option will now be unlocked. It allows you to use the special weapons (machine gun,shotgun,and grenade launcher) infinitely ,without any set limit.
Submitted by josh sanchez