Congrats on finishing your game! Well done.
I think there's something here in your idea, but it just didn't hit for me. The idea that your resurrected enemies are shields and grow your power is very appealing and very necromancer like. However, the fire rate is just way too slow. If your game starts the player weak only to be able to power them up later, that weak state still has to feel good. As it is, it's slow and frustrating and not fun. Especially for a jam, when people may only spend a minute or maybe two in a game, they're might never see where your game truly shines. The controls also didn't quite make sense. I like that you could pause to reform your spells, but it wasn't very clear what qualified as a spell or if my connections had any impact on what I was doing.
I wanted to like this more, but there just a few too many things in the way. I can tell you both put a ton of work into this here. No bugs (minus a weird audio clip that played only twice in a few minutes), and aside from the fire rate, the rest felt good. It feels like a unique take on this genre, too.
Good job on your game, team. Keep making games!