This one had me thinking a bit more than the past few by you.
I like when you mix finding and getting keys/items from the puzzles.
I like your music choice, too.
I mean SERIOUSLY. This is one of the WORST escape games I have played. It's impossible to beat without using the walkthrough since the 2 of the puzzles don't have answers (the ones you get from using the green and blue keys), or even a hint of one, in the game ANYWHERE.