Press left and right to move, press down once to crawl, press up to get back up, when crawling press left or right and b to long jump. Get right next to a wall and press space to wall jump as many times as you want. Press the green flag a few times. Press 1 to enable custom colors, press 2 to disable.
This is an updated version of my old engine, very buggy, but it works. You can drag the slugcat to wherever you want, this is buggy as well. Update: I have fixed a few bugs, added the ability to change to color of the slugcat, and added running. (Small bug but imma goin to say it is a feature) If you fall from a high place and hit jump when you hit the ground, you will go flying into the air.