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