WAD key or arrow key or tap. Try to reach the end without touching the spikes/water/dancing spike/❗ There may be hidden stages...? WARNING: THIS IS SUPER HARD ALL LEVELS ARE PROVEN TO BE POSSIBLE WITHOUT HACKING THE CODE BY @T1430142E Though I can't prove that this is possible without dying even once...
All credits to @okasinaokasii Part 2 coming soon...