Hey NB, thanks for a cool review. Not much feedback to give, because I agree most of the points you state. It's kinda silly with old projects, because I see the flaws too, so I can only agree, instead of defending the game whatsoever. Also, those are mistakes I've learned from. :)
Though, if you want to see the game a bit further, where it could get a bit more enjoyable (read: after that puzzle), you can check the solution to the puzzle from the game page comments!