Infinate Bullets (for only one level)
(This cheat is mostly workful for needler) Go to the level with the beach and you land in sand because the pelican drops you off in there go to the spot where there is a door with a few grunts and a red guy I think its a hunter well before going in there hold your needler then run up and down the checkpoint 7x's (when your screen turns yellow and says checkpoint) Then shoot with your needler and see if when you reload if you still have all your carridges if this cheat doesnt work this may need a few more attempts.
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