This was super fun!! The stuff with the lighting was so fun to watch, I love it. c: I had the same issue with the game running much slower after a while due to bullets not disappearing, but that's very understandable with the time constraint. This was very fun!

First of all, congrats on your first game. It is a nice game and the visuals with emissions are really nice to look at. I would suggest adding a variety of background music. Also , I noticed that the bullets don't disappear thus making the game run slow over time if a lot of bullets are spawned. So far it's a nice game.