The codes should work with the region specified but may work for other regions as well.
Device Compatibility: Action Replay, CodeBreaker & GameShark
Infinite pulse rounds
8009A5E0 03E7
Fire weapons quicker
8009A5BA 0001
Infinite flame thrower rounds
8009A5E6 03E7
Infinite health
8009A5D4 03E7
Have flame thrower
8008F8DE 0001
Infinite batteries
8009A5EE 03E7
Infinite smart gun rounds
8009A5E8 03E7
Have smart gun
8008F8DA 0001
Infinite shotgun shells
8009A5DE 03E7
Infinite charge grenades
8009A5EC 03E7
Infinite pulse grenades
8009A5E4 03E7
Have pulse rifle
8008F8D6 0001
Have shotgun
8008F8D2 0001
Infinite handgun bullets
8009A5DA 03E7