I really liked this game.. the puzzles were challenging but the end was kind of disappointing. I didn't even realize the door that I had unlocked was the main one.. lol I just kept running around trying to figure out what I had missed until I thought to check that one. XD
The maps were also nice but I felt a lack of interaction in the game. You should add some more events. With the objects especially but maybe also some more with the other guests? Apart from the very few hints that the guests gave, they were pretty much useless to me. I would have liked to feel that they were also really investigating the house, you know? Feeling like they were really participating in the 'game'.
The legacy mode seems cool too, but I'm not really good with riddles so I didn't really play much of it.
Apart from these few details, I enjoyed the game. It took me 45 minutes to escape but I still didn't figure out the computer password or how to unlock that one door right by the stairs.. o.o I might replay the game sometime to see if I can figure that out!
Good luck with the contest! :)