Good pun with the zombies all joined to get her! I had a couple of issues I'd like to give feedback on: the camera jitters a tiny bit when moving around - if you are using Cinemachine with Unity, I think this can be fixed by changing the update method property of the CinemachineBrain component, and I was a bit confused what the potions did before picking them up, sometimes they felt they didn't do anything and others it started rapid firing and sending out a lot of audio clips that hurt my ears a bit.
On a game design view I found the idea of killing enemies hurting you and lowering your max health to be a really interesting concept - perhaps if the potions had more things to do that would cost some health to use, that would make the killing-enemies-lose-health feel even more of a restriction you want to avoid and really play into that. Nice work, well done!