Hmmmm....
The graphics were brilliant, and the weapon choices were pretty original. The only reasons I'm giving this a seven is because you can only have 80 seconds to destroy, plus the time bonus. Also, when you start after the time runs out, you have to re-unlock your weapons. The 80-second time limit is not enough to destroy the world (only enough to destroy about 2 parts of it), making it seem unrealistic. Also, you should have put in a flood tool, which would make it more interesting.