Instructions are in-game. I will continuously be adding levels. Fullscreen is laggy (aka cheating). NOTE: I, bloop_bloop745, hereby sincerely apologize for being a terrible person and relentlessly tormenting you via levels such as 1-2, 1-B, 2-2, 2-5, 3-2, 3-3, 4-2, 4-3 (if you didn't give up by then), and more coming soon ;). So basically almost half the levels. Anyways, I highly encourage you to persist, as all the levels I beat myself in at most 1,000 deaths. (The ones that took me more deaths were deleted because I have no intention of making you cry for hours on end.) Hence the name Platformer [CERTIFIED POSSIBLE]. NOTE: The "grade walls" mechanic came from a bug that I embraced into level design. :)