WASD, Arrows, or Joystick 2 Control. Try to get past the last level. It's boring, but that's because it's still in the Alpha phase. You'll explore all kinds of worlds and biomes, but one tip: the underwater temple decreases your speed because of underwater friction, so yeah.
Griffpatch for 60% of the scripts (platforming engine & joystick). Just tell me if anything's broken. I made all costumes by myself.