You have to get rid of all kinds of evil by using a laser cannon. If you can't hit directly, try dropping suspended blocks or detonating a barrel of explosives.
This is where you can play Laser Cannon. If you want to play other free games, we have more hacked physics games. For example, you could play an amazing game with a rating of called Simple Motions Hacked, or you could try a game called Sports Heads - Football Championship Hacked that has a rating of 4.29. What, those games aren't enough for you? Then try out a hot game called Soccer Physics Hacked that has been played more than 41551 times.