Overall pretty simple I would suggest increasing the framerate if possible also the powerups dont appear to be random after the first two I tested it twice and after the first two or three it seems just to give me the same one after which isn't a big deal its just something that increases the variety of what the player can get would be a nice quality of life change. Also it might be a good idea to make it to that the enemies can't be blasted right before they spawn I could just spam left click and obliterate them before they had a chance to attack. Overall not bad I can't wait to see more!