I'm back from the dead and here with some ideas for the game.
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Idea 1 - Dill Beetle

As funny as he looks, he's by far the strongest enemy that isn't a boss. And when you defeat him, he'll drop loot that you can craft into armor. But if you lose to him, he'll use his horn to have sex with Leah.
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Idea 2 - Swimmers

So fun fact: there's a type of fish out there called a Candiru.
And similar to them, if you lose to them they'll swim into Leah's vagina and lay eggs inside her.
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Idea 3 - The Island Inhabitants

I've always felt that the island was missing some civilization on it, given the existence of sewers and mining in the game. So I came up with these guys.
If you befriend one, you can take it to the cabin and Leah can unbirth them. (here's a video of what unbirthing is for anyone who doesn't know what that is)
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That's about it though, time to head back to my burial sight!