I think you managed to capture the Lovecraftian atmosphere very wel. The level design is very good. Models look very nice. If you modeled them yourself in 9 days beside programming and stuff, it's a real feat! However think this kind of level design and gameplay does not fit very well into dungeon crawler genre. This could be more suitable for an FPS game like Call of Ctulhu: Dark Corners of the Earth or a FPS-Adventure horror game
The flaws i saw in the game are:
Footstep sound is too loud. UI is very smal. There is no feedbackon combat, no attack animation. There is a bug in combat which doesn't let you move when the enemy gets into the same tile as you.
I can see that you wanted add much more content but ran out of time before doing so. I think even with it's current state, it's a really cool looking game and fits the Cosmic Horror theme very well.
Good job and good luck on future projects!