Some QoL changes would be nice, also some of the levels felt more like mazes rather than puzzles. I like 2, 7, 8, 14, 15, 16, and 17 because the answer isn't straight-forward, but then theres ones like 12 where it feels like I'm following a path rather than solving a puzzle.
Got an absolute perfect game, got all "free" exp before taking a single health scroll.