This game is really cool! I really like the art style.
One suggestion I have though, is to add the ability to snap the camera to 90 (or 45) degree angles, because it's a blocky game, and the movement is based on the camera angle. Sometimes I'd end up walking in a direction just slightly different from the angle of the ledge I was on, and would slowly end up off course.
Other than that though, it's really fun, and I look forward to seeing the full game!