This project shows promise! I quit out of frustration on the second stage after gaining the climbing ability and pressing the blue switch, however. I may try again, but until then, here's some comments.
There are a number of things that make navigating around the enemies very frustrating. The enemies are very bullet spongey, your projectile is tiny and hard to hit with, and you have very little health. All of that combined makes for a lot of deaths and having to run through a gauntlet again and hope that you don't get hit by random stuff on the way.
The jumping feels kind of floaty. Combined with a speed windup from when you start walking to full tilt running, this can make certain platforming parts with long drops that will need another roundabout return route frustrating.
I enjoyed the aesthetics and the music! The flamethrower guy was a very random enemy to show up after just a bunch of wildlife.