Thanks a lot for the good feedback! I think the energy limit is important, because it makes the puzzles more complex. It getd important for the player to find out the most efficient way to solve the level. But as I see, this probably should have been worked out a bit different...
I thought the comments/ thoughts of the mein character would add a lot to the story telling. Do you think the player would have understood the whole storyline and would have been motivated to play further without the comments?