The graphics are well designed and make the game easy to read. Providing a tutorial is nice polish! The file names are fun too. I like that you can friendly-fire fry your own computer. The music fits well too!
I had a little trouble aiming the gun. It felt a little clunky, but I also played on a track pad. I wonder if it would still play well with a traditional mouse and feel nicer for the track pad if the sensitivity for rotating the gun went up a little bit.
I can't believe this was your first jam! Way to go!