Good job hitting the theme of the jam by possessing enemies as a ghost. that part was really nice.
For improvements, you could polish the visuals by making the sprites flip when moving in different directions, and adding some game juice (screen shake, effects) plus sound effects would help a lot.
For gameplay, be mindful of the player experience. You don’t need to make things harder just to look hard for example, spamming the Space bar that much just to possess an enemy isn’t fun, it’s just tiring. A single press or a short hold would feel a lot better.
Overall though, great concept and good effort!