Thanks for playing! Appreciate the feedback.
Diagonal shooting is a problem that I'm not even sure how to solve. The issue I have with it is that I choose shooting direction based on the last direction you moved, and on M+KB you won't have diagonal be your last direction ever since you can't let go of the keys at the exact same time.
Reverse shooting is supposed to be helpful for enemies that chase you like the skulls and the ghosts, but it probably would be best to scrap it completely since it just confuses people.
Surprised I didn't even think about the exit button since I'm so used to just killing the window. Oops.