WASD or Arrow keys. What makes this platformer much more difficult is unlike other platformers is that it revokes the ability to change velocity in the air. This makes the game much more realistic and makes wall-jumps not "OP" anymore, but instead rather annoying.
This is a demo version with only 2 available levels. After the full release, this may be the last project I will work on in Scratch. However, I will release some of my unshared projects with sufficient quality. Player by @8922boo. Same credits as my other platformer Darkness. As I have quit making further projects on scratch, I have decided to release some of my favorite unshared games.