Here is the full list of all 12 Namaiki Dark Elf Sisters achievements.
Spill your seed with your choices more than 5 times.
Think about all the broken hearts.
Dark elves are superior to other elves.
Letting it out inside is the symbol of love.
Paint the walls white with your choices more than 5 times.
The cat is out of the bag.
Let’s establish a new religion.
I'm not done tasting it yet.
Time is money. Gotta do it quickly.
The first experience turned out to be quite rough.
My precious white liquid was stolen!
Hence the story begins.