Update: just replayed this game and it really holds up. A great game. Happy to see there are now walkthroughs online! Dev-please make more!!
Very challenging, clever, and tricky.... with unique puzzles and surprising solutions.... you can't take anything for granted. Hints or a walkthrough would definitely improve the experience, imo. I needed help from a friend and might have been stuck forever without it. But wow, a great game for the advanced puzzler. Try it!