My submission for the Ludum Dare.  A mix of space-invader style games and platformers, too very incompatible genres.

Controls:

W: Jump

A: Left

D: Right

Space: Shoot anti-air attack

Story:

The world is consumed by darkness. The darkness has turned earth's fleet against the survivors. You are a simple anti-air droid, who must journey across the land to activate anti-air missiles and stop the darkness.