To have unlimited Continus, you just need to get the Game Over several times in a row in story mode. Continue to get unlimited.
Written by the 25/04/2008
VSSE agents (background): Finish arcade mode.
Shield: Finish Complete Mission mode once.
Captain Rush (background): Finish Complete Mission mode
Elizabeth Conway (background): Successfully complete the last Crisis mode mission.
Missions Crisis : Finish arcade mode once.
Freeplay Mode (Unlimited Continues): Finish arcade mode once.
Unlimited ammo (pistol): Complete arcade mode twice.
Unlimited ammo (special weapons): Complete arcade mode twice.
Unlimited Ammunition : Finish Complete mission mode twice.
Sound Test : Successfully complete the last Crisis mission.Written by the 25/04/2008