Cool game. 5/5 to help your score. My only problem (which is pretty small) is when I dies after jumping off a moving platform I kept respawning in mid air over nothing until I final had 0 lives.
It was alright. What was annoying to me was the bullets can hit the ground in front of an enemy. The should go completely straight in any direction you fire, so that you don't have to aim directly on or behind an enemy.