Stage two for each planet encounter takes place inside the comet, which appears to be an alien ship. Enemy waves continue to spawn until the player reaches the main boss for that planet. A large ship with 10 orange targets that will alternate between covered and uncovered, fires a bullet for each active target when opened. When the player destroys each of the targets, the boss explodes, and the planet is saved. The screen then changes to a bonus point calculation where points are awarded based inversely on the amount of damage the planet has taken during the level.