I appreciate the extensive feedback.
I wanted to have more enemies that didn't require crouching and a more engaging boss fight but I ran out of time, I assumed most people wouldn't make it to the boss anyway, not even I did during most of my playtests. I'm surprised and impressed you made it as far as you did.
I'm working on a full game version of this with levels instead of enemy waves so I'll work on improving the controls and attacking.