I see what you are trying to go for and it is in fact really fun just the last 3 levels had a very overwhelming difficulty curves, Thi hit box of the player felt a little wonky at times I think I can make it but then I hit a spike but then I think I am going to die but I hit the same place on the spike and end up getting through alive, other then that I am not sure what the a/d does in the menu exactly.
anyways Good Job and Goodluck