Use arrow keys to move. Green is ground. Red kills you. There are portals: Pink causes you to win. Light purple causes you to move a bit to the right. Dark purple causes you to move a bit to the left. Portals can cause you to clip into walls. If that happens, press R. You will see some pressure plates connected to a screen. The pressure plate will do what the screen says. If a danger reactivates while you are inside it, you will die.
thx to @TenderGalaxy for a lot of the code