Here is the full list of all 80 Rime Berta achievements.
Get 50 total Skills.
Use assist Skills 50 times.
Learn all Skills of the Longbowman class.
Defeat two Units at once.
Save 20 times.
Defeat 100 Units.(regardless of class)
Use Reaction Skills 100 times.
Learn all Skills of the Warrior class.
Performed your first Class Change.
Get a Unit to Level 10.
Use healing Skills 50 times.
Part with a Unit.
Defeat 50 Units.(regardless of class)
Defeat the Floor 1 boss.
Use magic Skills 80 times.
Get 10 Units to join your party.
Learn all Skills of the Magician class.
Select ''Wait'' after using all of your AP.
Use two Reaction Skills one after another.
Fuse two Units together.
Get 20 total Skills.
Use a Skill so much its usages go back to 0.
Defeat a Unit with a Reaction Skill.
Get five Units to join your party.
Learn all Skills of the Archer class.
Defeat 200 Units.(regardless of class)
Defeat 300 Units.(regardless of class)
Get 5 Game Overs.
Get 10 Game Overs.
Get a Unit to Level 25.
Get a Unit to Level 50.
Get a total of 25 stars in various Stages.
Get a total of 50 stars in various Stages.
Get a total of 75 stars in various Stages.
Get 20 Units to join your party.
Change Classes five times.
Change Classes 10 times.
Fuse Units together 10 times.
Fuse Units together 20 times.
Get 100 total Skills.
Get 100 critical hits.
Do 400 damage or more in a single blow.
Defeat three Units at once.
Get a single Skill's level to MAX.
Learn all Skills of the Paladin class.
Learn all Skills of the Dragon Knight class.
Learn all Skills of the Mage Fencer class.
Learn all Skills of the Lancer class.
Learn all Skills of the Knight class.
Learn all Skills of the Arch Knight class.
Learn all Skills of the Valkyrie class.
Learn all Skills of the Shotgunner class.
Learn all Skills of the Thief class.
Learn all Skills of the Gunner class.
Learn all Skills of the Ninja class.
Learn all Skills of the Rogue class.
Learn all Skills of the Sniper class.
Learn all Skills of the Saint class.
Learn all Skills of the Priestess class.
Learn all Skills of the Sage class.
Learn all Skills of the Witch class.
Learn all Skills of the Bishop class.
Learn all Skills of the Sorceress class.
Learn all Skills of the Arch Mage class.
Learn all of Affi's Skills.
Learn all of Hannah's Skills.
Learn all of Misty's Skills.
Raise a Unit to Level 80.
Use three Reaction Skills one after another.
Use four Reaction Skills one after another.
Use five Reaction Skills one after another.
Use trap Skills 30 times.
Defeat the Floor 2 boss.
Defeat the Floor 3 boss.
Defeat the Floor 4 boss.
Defeat the Floor 5 boss.
See the ending of Route A.
See the ending of Route B.
See the ending of Route C.
Get all of the medals.