for threesome, just have sex with a kobold with 2 others near it. easiest way is to do it with the missing dude quest. for the naughty villagers, you just talk to the queen after the missing dude quest. the entrance is the elevator at the top-leftmost part of the village
i don't think you can fix the water yet but don't quote me on that.
MISSING DUDE
just drop down from here and he'll be on the right (along with 4-5 kobolds to get it on with for the threesome unlock)
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FULL GALLERY SAVE