I really liked how you gave the theme an extra consequence in the gun being heavy as well as big. It definitely fit the theme very well and it is a very interesting idea. I think that right now the gun is a bit too hard to control, which made me just shoot around randomly more than trying to aim at the meteorites (they were pretty small and dificult to hit).
Anyway great job making this in 2.5 hours! I thought is was a really unique and interesting entry!