Just finished my first session. It was beautiful, felt like walking through an alien museum of artifacts. I second what Gerhard said about it being real immersive by the fact you have to rely on you senses so much. Took me a couple minutes to stumble onto the first object but then I found them left and right. Nice touch with the Minotaur/Fish thing. Pooped my pants right there.
Walking speed is good in my opinion, albeit that the stairs caused me some trouble.
Good work, I'm really enjoying it.