Simple mechanic, just needs some polish.

I would consider: 

• Not starting the level until the play gives input
• Change the controls to 
  • spacebar not down = gravity down
  • spacebar held down = gravity up
  • instead of the current press to toggle
• Focus on the single move mechanic 
  • remove the shooting all together until you have fun puzzles with just the movement

Good concept.  Simple art style.  Good job.

Great concept, I see some progress since the proto! I would make the level start once the player hits a key and add some parallax layers somehow so the player feels the scrolling easier. It feels a bit laggy on the web from time to time, and that for this kind of game, is the difference between finishing a level or rage quitting. Good job, congrats on your entry!

>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?

Congrats on the entry :)
I really liked the overall idea of the game, and I think it has great potential!

One constructive feedback I could give is that it took me a great while to get the hang of the game. For a while, I didn't even figure out that the map was scrollable.
This could be solved maybe by making the start easier? Or gravity weaker?

Nevertheless, really liked the game, great job!