When i first saw the screenshots of the game, i thought it was set in the Matrix universe and it excited me so much! :)) I believe you wanted to give your game a different look with this color palette and i respect that decision. Though i have to say it kind of tires the eyes. I saw everything green for a while after i finished playing the game :)) Joking aside actulally i like the visual style of the game. It feels like a very old school and hardcore dungeon crawler experience. It would be nicer if there was an inventory insted of increasing stats with power ups but it's hard to implement all that mechanics in 9 days time.
I also liked how you incorporate the jam's theme. I think i've read "The Dream Quest of Unknown Kadath" years ago. I know a little about Lovecraft's "Dream- Cycle" mythos. I'm not sure it could be considered as "Cosmic Horror" like the "Ctulhu Mythos" but doesn't matter. Anyway i think it's a great setting, i also considered using this setting for the jam. I think this is why you used this particular color palette, to give dream or nightmare look to the game visually. Also saving the cats is i think a reference to another "Dream-Cycle" story "Cats of Ultharr" it's very cool touch!
Combat is a a little straightforward but again it's impossible to create full fledged dungeon crawler game in 9 days. Also it would be great if the automap would have show us the rooms we've been to before. So that the players wouldn't be losing their sense of direction and going to the same rooms over and over again. Final words are, it's a pretty cool game with decent mechanics and polished gameplay. I really liked it. Great job and good luck!