The S key thing was actually something I griped on a lot when making the game. Originally during development I had a hint for the first level that required it explain the S key's functionality without having to press H for a hint, but I later changed it so that the tip would be hidden unless the player asked for it explicitly with the H button. I changed that because I felt some players might want to experiment on their own without being told the solution, (and because it kept the game's largely minimalist, no text style more intact) but given that it's a pretty hard thing to figure out on your own I probably should have found a better solution. In retrospect I probably should have included that in the description for the game along with the controls. I really appreciate the feedback, this is actually the thing I most wanted to playtest before release but I just didn't have time during the jam lol. I guess I'll work more on that balance in the future. Thanks!