>What was the most frustrating moment or aspect?
The inability to re-set the difficulty from in-game.
>What was your favorite moment or aspect?
Blowing up the boss.
>Was there anything you wanted to do, but couldn't?
I wanted the ability to either return to the main menu or return to difficulty select specifically. Having to quit out of the program and relaunch it was a big tedious.
>If you could change, add, or remove any 1 thing, what would it be?
I feel like the explosion left behind by the boss could be bigger. It could even be used to loop back around to the title screen, since there's already a big explosion there.