It's nice and tidy, a bit puzzle-like platformer. The second level almost drove me mad, it's simple, but there was always something that failed, either the hit detection with the orange cubes, or the double jump timing. Then I learned that you don't need to defeat the orange cubes to continue to the next level. Wall jumping is nice too, although I finally gave up in the part where you have to wall jump under a floating wall and then wall jump over a third wall.