I was only able to make it through the first level, but I was compelled by the narrative, visuals and audio to click through the checkpoints to see the rest. I agree on the level design being a bit too difficult. I wish spinning the propeller while it's in mid air moved it around. I didn't realize at first that I could click, drag, and hold to continue the propeller's spin. With two monitors, I kept accidentally clicking out of the game.