Concept: feels a bit tangential to the whole necromancy shtick, gives more vampirism/consumption vibes then reviving the dead vibes. I do like the dark story though, cool stuff.
Gameplay: it's simple and focused. It's easy to pick up, but has enough depth to be engaging. It's also very polished, with a nice tutorial (really rare breed during these jams) and good balancing.
Art: the overall presentation is very good. I really like how the text looks with all the different text effects. The lighting is amazing, creates a fitting dark mood together with the audio. The camera effects are also add a lot of nice gamefeel, very nice and polished. The sprites are very well drawn, though the differing pixel sizes on the scene do hurt the visual coherence a bit.
Audio: the music is pretty good, fits the mood well, and the sound effects are really good, they give every action good feedback.
Very good entry overall, simple but very polished. Congrats!