Here is the full list of all 24 Elf Discipline Ceremony achievements.
Start the game
Complete the ritual on the third day
Fail to achieve the goal during the ceremony
Achieve the goal when completing the ritual
Achieve twice the goal when completing the ritual
Trigger Sophie's blowjob - in heat
Trigger Sophie's handjob - in heat
Trigger Sophie's breast job - in heat
Trigger Sophie's sex - in heat
Trigger Sophie's anal sex - in heat
Trigger Lily's blowjob - in heat
Trigger Lily's handjob - in heat
Trigger Lily's breast job - in heat
Trigger Lily's sex - in heat
Trigger Lily's anal sex - in heat
Trigger Beatrice's blowjob - in heat
Trigger Beatrice's handjob - in heat
Trigger Beatrice's breast job - in heat
Trigger Beatrice's sex - in heat
Trigger Beatrice's anal sex - in heat
Reach a "Mind" of 30 during one ritual
Reach a "Skill" of 30 during one ritual
Reach a "Body" of 30 during one ritual
Reach level 5 during one ritual