Fun
Very fun. Combat is fast paced, and you quickly get to see the resurrections system. The Resurrection system upgrades feel powerful and death felt less punishing as a result.
Aesthetics
Decent: Simple pixel art style. A lot of typos. Wish that projectiles and the boss had more contrast to the background. Dark black on brown isn't ideal.
Music
Decent. Fits a battle scenario. I wasn't impressed with it, but I didn't hate it.
Sound
Outside of music didn't really notice any sound. Would have like explosion sounds or a hit indicator.
Mechanics
Fantastic. The resurrection mechanic is really cool. I don't like how it encourages throwing a fight but it did make me chuckle a few times. Movement felt snappy, aiming felt good, hitboxes were aligned properly.
Story
I think you are fighting yourself? A bit room for interpretation here, but not much story.
Theme
The undead spooky theme is well implemented, and the resurrection mechanic matches the game jam theme perfectly. Well done.