Okay, so here are things I think need work:
1. Far too dark, even when I've turned on the lights
2. Also, you expect a brighter light around him
3. The game pauses itself when entering/leaving rooms, and at other times
4. Rooms far too big. Lots of wandering around in massive spaces with nothing to see/do
5. Room size issue exacerbated by slow movement
6. Menu scene transition far too slow
EDIT: All the rooms seem too big (at least the ones I've discovered), and especially the liminal spaces.