P: Pick Up and Put Away - Again, in retrospect, this keybinding does make sense for the function it corresponds to, but this is not something I would have figured out intuitively. This is the first time I've encountered U as the interact button, and this is necessary for completing the intro. U: Interact - I think the 'U' is short for 'Use,' which makes sense when you put it into perspective, but in literally every other game I have played, the Interact function is usually represented by E or F. When I first played this game again, I was almost afraid that my game was broken because I was so limited in my movement (and it has been quite a while since I played this game, so I forgot about the nature of the tutorial.) In the off chance you get scared of this too, don't worry, chances are your game is still fine. Arrow Keys: Movement - This is the most self-explanatory and logical part of the control scheme, so I'm not going into detail, but I wanted to bring it up because the intro/tutorial level has you tied to a mast post, and you can only move left and right to start off.
