Is it like Annihilation ? Did someone say that? Not to get too spoilery but the idea of all sorts of DNA combos could make for some cool monsters, there's that shark/gator like pickle/human. It could be a similar concept without being based on the movie at least. And it's all kicked off by a meteor.
Or if the pickle/man is taken more literal like carnivorous plants that would be cool. or a sewer with post apocalyptic rat monsters? Existential crisis of being trapped imobile in a pickle? Eating poop? Idk i'm just brainstorming.