Here are some cheats and tips for the game Daffy Duck: The Marvin Missions.
Weapon select:
Earn ten points after defeating ten enemies, then pause game
play. Enter one of the following controller actions for the corresponding
weapon or bonus.
Item Code
Laser Up(2)
Big Bullet Down(2)
Bouncing Left(2)
Rapid Fire Right(2)
Health Refill B(2)
No change Select
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Level Password
2 72308
3 04070
4 82048