Thank you for trying our game and for the feedback!
The controls are designed to be a bit difficult, but maybe they were a bit too difficult. It definitely wasn't just you!
The idea with the stickers was to do with quote at the start, that Sisypus would've been happier if he could've earned points to decorate his boulder each time he pushed it up the hill. I think that because you didn't earn points until the boulder was pushed up the whole hill (which does take a while and several attempts), most people didn't get to experience this properly. If we continue work on this project it is definitely something we will address!