How do I restore all things? I finished the game before and delete it and I forgot what to do to restore them;-;
At the same time, there is a lever at the top of the second part of the tutorial. It's 2-3 spaces above the entrance, so you need pitons to get up to it. Just grab the pitons at their respective (2nd to last) part of the level, and rewind all the way back to the enterance to hit the lever. Don't worry about gravity for the final jump.