READ: A&D to move left and right M to jump N to dash (Dashing midair will give a slight horizontal boost to your jumps, helping you cross gaps you can't cross otherwise) wall jump: should be pretty intuitive, but press the key for the direction of the wall you're facing to cling to it, then you can either jump while pressing the key of the opposite direction, or stop pressing the first key to drop down.
Just a pointless project made for fun. Made using @ShiftClickLearn (scratch, youtube)'s scrolling platformer video tutorial series, with a few personal tweaks here and there. I think these metal sonic sprites are mostly from sonic CD(??)