I didn't get my five minutes out of it >:C
I beat it in 4:38. I DEMAND A REFUND.
All kidding aside, it was pretty fun. The only one I didn't really liked was the first one with lasers. It just fired too fast to be avoidable... well... okay, so I'm just really bad at avoiding that kind of attack. But seriously, slow that one down a bit and it'd be really fun.
The final boss was actually really fun. It was surprising to see the attacks coming from the sides.
Overall, good game. Try to make it longer next time.