The objective of the game was very unclear, and after 48 hours of play-time (past the steam refund policy play time), I still did not understand what the purple charge bar was. Could have used an in-game explanation for the controls. Also the sprite that the player character launches looks like a man dead lifting.
Viewing post in Big Bullet Box jam comments
I'm not sure if I can edit the page without being disqualified, so I'll put it here. The purple bar represents how much longer you can stop the autofire for. Once it's full, autofiring resumes regardless of your inputs. Its effect isn't super noticeable early on, but after your fire rate increases a bit it can be a massive lifesaver. Also, there is no real 'goal' beyond surviving and getting a high score. This should have been in the game's page, sorry about the confusion.