The codes should work with the region specified but may work for other regions as well.
Device Compatibility: Action Replay, CodeBreaker & GameShark
Inf Ammo at Weapon Pick-up
8012a5c20063
8012a5ca0063
8012a5da0063
8012a5ee0063
8012a5c60063
8012a6120005
Inf Ammo at Weapon Pick-up (Alternate)
8012a5f20063
8012a6160005
8012a5e60042
8012a5be000e
8012a5fe0005
8012a5ce0010
8012a5de0010
Stop all Timers
801f995808ad
Infinite Armor
d0089e680006
80089e6a2400
Enable All Levels
8014af3c0015
Have all Weapons in Menu
8012a5b0ffff
Extra Char & Lvls 2 Player Mode
8011f6a4ffff