Short walk around the first level area -> something seems missing (besides sound), but I am not sure what. it seems to 'sterile.' Any thoughts that might make this feel less sterile?
hmmm, weird.
well first of all, the level is too bare and boxy, even for that stylisation. get rid of some of the 90 degree angles, just a bit maybe.
secondly, give the camera some ease-in/ease-out on the movement, that will probably help the feel. also, there's too much light. make it a bit darker so we can see the gradient of brightness towards the torches, to the lighting can create some more interesting color play.
I would suggest adding more contrast with the colors so things stand out more. I would also look at making the movement a bit smoother so the character doesnt feel so "jerky" if you know what I mean.
Another thing, I would add a border to the mirror to make it clear that its a reflection from a mirror :)