It took me some time to figure out you had to drag the thrusters and hydraulics to use them (I tried to draw them myself at first :p) so that could get some explanation, and it seems like the thrusters didn't thrust as much on my pc, cuz I just couldn't get it up a steep hill in like the 2nd and 3th level, but maybe I'm just terrible at drawing sleds, but aside from that, I really liked the concept, I like the doodly-art, the music is great, and I loved using the hydraulics, it was fun! so yeah well done!