Finished it. All in all it is a nice game. You have to look carefully to find all diamonds and the puzzle where you had to find the pair of shields was kinda annoying. But otherwhise it is a pretty easy game.
As qwerty said, the puzzles were not too hard and not too easy, but enjoyable enough. It may take a while to figure out, so be sure you study the puzzles and rooms carefully.
(Short/useless comments don't award GIPS)
Also, what an ending...
btw nice game xDD