Hey really cool spooky looking game! I read that its your first jam, well done!

I looks finished and polished, I liked the way the blood (or green ghosty-juice?) droplets were kept for a while on the ground! Music and sound effects fit the game well also!

Good job :)

I like your grasphics!

Considering this is your first ever game jam game, I think you have done fantastic!

My favourite part is the little blood particles

That was fun ! I felt like I could not go any further than what I did since monsters just spawn more and more until a point where there are just no other option that just dying, but otherwise it was cool.
The game is too slow, not only the pace, but the overall feeling : you could make the bullets twice as big, the fire rate 5 times faster, monsters come more but kill them in a single blow, and it would feel like you're really doing a pure rampage. Here, you are surviving, which is great, but does not put the emphasis on juice enough in my opinion.
Also, small detail but I did not understand the yellow powerup.

Thanks for the game :)