Camera sensitivity is set too high.
Switching weapons doesn't seem to work, i pick up the weapon in the first chest put using my scroll wheel doesn't switch weapons and i have to use just my fist.
Also having to hold down ctrl and left click to start the game and enter new areas feels weird

I think you've uploaded the wrong game. the title says Pixel Adventure but the game inside is called Galactic Miner

The first jump is incredibly difficult and annoying.

But after that the game pretty much becomes a cakewalk