Let me guess, the one where the controls are inverted, right?
I give you hint :
1. To jump, just click
2. One of the spikes is the key
3. You can drag the tutorial bar by clicking and drag
omg!! its soooooo interesting, I finally passed this level! I cant believe that the spike was so important and the exit was on another side. I love your game! btw, i think the button in the upper left corner is somewhat blocking the view. Maybe it could be moved a bit further to the left or made slightly smaller :)