The game starts off cutely and then right after that smacks you with a puzzle that defines unfair. It's not clued and there is no way to get anywhere in the game without pulling the good old "examine everything" bit.
Then you have a parser that doesn't know common verbs (like knock), and a lot of purple prose. Seriously, there are very few objects in the four-doored vault area and there's purple prose? Not only that, but there are bugs.
Once you make it past a door, you'll find puzzles that are just as annoying, and perverted NPCS to boot. One of the puzzles is a riddle. Another puzzle (get this) is a mathematical word problem. It was at this point that I gave up. I thought games were supposed to be entertaining.