relating to nini's quest i have tried
completing memorial/library/anthill/cemetary
completing memorial/storms house/p's house/cemetary
completing memorial/back to colonols/library/cemetary
I've tried unlocking and visiting the cemetary first both ways and then doing the memorial and returning
all of which yield sea slug
this has been done from 3 different save files (speedrunner art and humanities) most of which i played through till the end to see if its obtained in the final chapter somehow.
Other conditions that I can recall is giving the pelt back then going to the shed and doing the cemetery on the last day; which will give you quite a variant on dialogue and might give you the skull.
I don't recall if doing both returning the pelt and doing the burial effects the last day of the cemetery and effects the collectables.
thank you! i didn't realize you had time to do pelt and memorial before going to cemetery cause I hate not giving storm the jacket. skull acquired!
you can do them as short as 5 days. the middle section of finding stuff underwater can be done in the same day
