Welcome to Parkour Nightmares where you fight monsters, evade obstacles, rage, whatever you want!
For lvl 1 stop getting happy, you didn't find a glitch. I put that there because you can't jump out.
For lvl 4(Calm Down, the first jump IS indeed possible, but you need PERFECT timing)
Controls: W jump, A Left, D right, Shoot stars (pay attention to lvl1 and find out)