Movement = WASD Press 0 to test the set.position script I made. see inside, it is very simple and optimized. This game doesn't have a lot of features. Stuff like coyote frames, slopes, and good x movement aren't included because it would make the code more unreadable and complicated. This game is designed to be understandable. So even though those things are very good and sometimes necessary, this is supposed to be a simple tutorial and not a full-fledged engine.
I don't mind if someone uses this with or without credit. If you die somehow, and want to tell the player to go back to spawn, just move to yout desired area, write down the coords shown on the bottom left, then write a script to set those variables to that value using the (change universal.position values) message.