Hello,
This is a very interesting game. The movement and shooting were smooth and I liked them. I played through some levels but I noticed that the enemies get pretty repetitive and somehow I managed to bug my powerups by spamming the first one I got and because of that I got my whole screen covered by the same Icon ( I put a screenshot). Another thing I find strange is that you can just spam shift and skip through levels without even giving them a glance. You should put some flag when the level is over then can the player go to the next one.
Overall it was a really neat and cool little game. It made me a good impression!