Blaster Master - Cheats & Codes
Super Jump - If you jump, pause, then jump again while in mid-air you can do a double jump! Keep doing this to get as high as desired.
Easy Bosses - During the boss battle, quickly throw grenades at the boss as fast as you can, he will begin to flash. Press pause while he's flashing and wait 25 seconds, unpause the game and the boss will explode. Note: This only works on levels 2, 4, 6, and 7.