The idea is interesting, enemies don't shoot bullets. Visuals are a bit lacking, but the game doesn't look bad. I really like that the bullets bounce.
But the game is definitely too difficult, enemies spawn from all sides and soon there is nowhere to run and you just die. The bomb does nothing because the only moment it reaches less than 7 is at the beginning. Also I think reloading is not needed in this type of game, since you have unlimited ammo and 1 weapon type anyway.
Overall the game's good, but it definitely needs more content.