The Bonus Endings DLC One Add-on for Fetish Locator Week Three has 12 achievements.
Complete Ending 4
Complete Ending 7
Complete Ending 11
Complete Ending 12
Complete Ending 14
Complete Ending 17
Finish all 6 Endings from DLC-1
Do it with with Debbie
E07 - Get max points in Lydia's challenges
E04 - play with all the characters
Finish e04 and e07
Finish 12 endings