[PS2] [Cheats] Time Crisis: Crisis Zone
 

Infinite Ammo:
Beat the game with 100% to get infinite ammo.

Weapons:
There is a brown enemy in each level holding a secret weapon. Kill him each time to receive the 5 weapons.
Flame Thrower: Drycreak Plaza in store room
Gattling Gun: Grassmarket Street
Grenade Launcher: Belforte Hotel
Laser Rifle: Garland Technology Center near gun turrets.
Missile Launcher: Garland Park

Source? Here it is.