Namco Museum Game Boy Adv Glitches

Make the Galagas stop firing.

Just like in the arcade version of Galaga, you can make the enemies stop firing missiles. In round 1, kill everything but the two left flies on the bottom row. Let them fly around for about 15-20 minutes, until they stop firing their missiles. Kill them, and for the rest of the game, none of the enemies will shoot at you.