Here is the full list of all 32 Devil in the Details - there are Uncensored achievements.
You just can't seem to give up on the impossible.
Returned to your normal, everyday life.
Chose Luci over her sister.
Couldn't correctly answer even one of Bri's questions.
Completely messed up your date with Luci.
Returned Bri's strange stones.
Get two detentions in a row.
Faithfully served your sentence.
Asked for Rinnie's phone number despite being strangers.
Successfully seduced Cheryl.
Obtained Luci's romantic ending.
Obtained Rinnie's romantic ending.
Obtained Bri's romantic ending.
Joined the film club.
Joined the history club.
Joined the science club.
Joined the literature club.
Joined the pottery club.
Joined the sports club.
Became Akame's eternal slave.
Became strong enough to transform into an incubus.
Successfully seduced Luci.
Successfully seduced Bri.
Failed to please Akame.
Wasted your after school time going to a club meeting.
You were caught snooping by a teacher.
Joined the swimming club.
Snuck into the locker room.
Sometimes, the truth is better left untold.
Got caught ditching Luci and ruined your relationship.
Not everyone has the charisma to charm ladies.
Ditched Bri and ruined your relationship.