>What was the most frustrating moment or aspect?
Just figuring out how to getting started is very frustrating, but I assume that's the point? I'm assuming this is a rage-game of flappy bird with a gun.
>What was your favorite moment or aspect?
Getting partially through the first level was nice.
>Was there anything you wanted to do, but couldn't?
I wanted to finish the first level.
>If you could change, add, or remove any 1 thing, what would it be?
I would either start with a pause or remake the movement to apply momentum in response to player action instead of automatically. That way, so long as the player must press the correct input to start moving in any given level, they're left feeling more in control and potentially more invested.