oh come on ...
they are no need for that honestly. all you have to do is to fuck the girls in various way. that give you kind of achievement and then you go check that white haired girl and unlock the poses, places and else.
didnt take more than couples hours at max to unlock everything (only locked thing more than that is to break/slave a girl, but that easy to make if you just create a char and use all the traits and stuff to make her already half broken at beginning and loving this, it speed up the process)
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as for people with white screen.
download new 1.1 or check few pages before and the link to the fix for that is in OP . or just go to the dude patreon and under the 1.0 post pick the fix link and voila.