Thank you for the feedback!
I want to add death animations and some other cool stuff when the player dies but I didn't get to it for this release. The $8 gun was a bug but at least more people will get to try the shotgun. I appreciate your other notes as well.
Did you try the ability system at all? Keys 1-4 enable super powers that cost energy. This project is just for fun but maybe some day it will be more.