Pro Action Replay Codes
Source: GamePro - August 1995 - Page 96
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FFF24 - 30036 - Player Two has infinite bullets
FFF24 - 50040 - Player Two has infinite machine gun
FFCD7 - 30001 - Player Two has invulnerability
FFF24 - D0002 - Player Two has infinite lives
FFF04 - D000X - Level Select (replace "X" in code with "0-A" for level number).