Use space or arrow keys to jump. Tap if you're on mobile. Let go to let the character fall. Try not to hit the obstacles. Sometimes there will be glitches like the "pipes" duplicating the clone so you'll have to re-flag in order for it to work again. Switching into level two has a lot of glitches. I might have to fix the spawn point. Level 4 has the most glitches...
All of my hard work and code, it took 2 weeks. 100% possible test by me.