W, A, and D to move. Go to the switch to be able to go through the exit (door thingy). Avoid the blue crewmate, as it can destroy you (the Impostor).
Thanks to cwksai60791 for the original project Platformland. Also, level 4 is INTENTIONALLY kind of broken. However, it is intentional. On Level 4 if you get stuck THEN YOU LOSE!!!!!