Have you tried the tutorial? It teaches you the basic mechanics of the game, such as walljumping, or propelling yourself with your gun ;)
I've tried the tutorial for about 5 minutes. Did not understood well how moves works. Maybe i should play it more ^^
It's okay, it's a game that requires you to play and get familiar with it for some time before being able to go really far.If you manage to get to around 75-100, you should be able to go a lot further :)