I really like this idea, but I would suggest making the hazards a different colour because I thought the tall rectangular ones were doors and jumped straight into it. I like the idea of using the gun as a kind of double jump, and I think that would benefit from being a bigger boost that would feel nicer and more powerful.

It's cool, It's very simple but it works. The only gripe is that the slime animations feels unresponsive (even though I can see that its not on the collision side of things). Overall excellent if simple game!

The controls are not very intuitive and it's hard to see the obstacles but I like the concept

I love this track, it's beautiful