I couldn't be able to see through the game bcs of the reason i'll state later but i think this is the most complete and polished game of the jam despite it's bugs and flaws. Firstoff, i think that this has the best movement system of this game jam. It is very close to Legend of Grimrock's movement feeling. What i like the most about the movement in this game is when you hold w key player moves forward continiously but it snaps from tile to tile. It feels very smooth and snappy.
Inventory system works perfectly. It would be nicer if you could add an equipment window where you can drag the armors /weapons to the slots on your body there but this is good too. Level system also work great for a jam game. You can get new skills and spells. UI is very good. It looks nice and works well. Combat system i think is perfect. It is just like you expect from old school Dungeon Crawlers of 90's.
I like the visual style of the game especially the textures. You successfuly created atmosphere of an ancient necropolis. Enemies are just sprites with no animations but they look good. They don't stick out from the general artstyle of the game. It's a very good idea to make enemies with sprites in a 9 days jam. There's also a good variety of enemies with different difficulty levels.
I don't like very much the level design of the game. Level is branching too much and too frequently. In these kind of games it is very easy to get lost. There's a compass in the game but it doesn't help much navigating you way around. There needs to be an automap which shows the sectors i have been to in this kind of game. Verticality is a nice touch and executed well but i don't think it contributes too much to the game. It would be cool if you had designed the dungeons like an Escher Labyrinth, then it would mean something. I got stuck in the game like many others that posted comments here. Since it's difficult to navigate through the map, you keep drawing circles in the same places and it bores you after a while. I also tried to beat the game for around 30-40 mins to no avail.
These are my general thoughts on your game. I really liked it despite it's flaws and it think it's one of the top contenders of this jam. Congrats for your hardwork and good luck!