Here is the full list of all 26 Sable's Grimoire: Man And Elf achievements.
Share a bed with Lisha
Discover Ein's family secret
Comfort Lisha
Face off against another dark elf
Speak with your actions
Break out of prison the way only a mage could
Restore peace, and foster new friendship between man and elf
Give in to a dark obsession
Discover a new side to Lisha
Sneak a tender moment right under Ein's nose
Take on a promising new student
Enjoy some private time in the classroom with Miss Valedictorian
Discover your new calling in life carrying baggage for elves
Get a little too close to Victor
Eat together with a family of elves
Land yourself in prison
Sneak a glimpse at what your fate might have been
Discuss your plans for your future together
Witness a battle between two mighty elves
Welcome a new member to the family
Have fun abusing the power of mind control
Watch Ein act like a village leader (for once)
Recall Lisha's selfless heroism
Take in the sight of a loving family
Learn how to make magical artifacts
Learn how to increase one's lifespan