Game Invaders

Entry for the Ludum Dare 49 game jam.

The theme was: Unstable.

Can you help me defeat this bugs and release a stable version of my game? It's really unstable right now and I need your help.

If you can beat the 12 levels without dying you would be my hero!

Movement: W A S D

Fire: LMB or Spacebar (click or hold)

Collect the presents to increase your score and powerup your weapon and avoid the errors to not crash the game!