Here is the full list of all 80 Rime Berta achievements.
Defeat a Unit with a Reaction Skill.
Use two Reaction Skills one after another.
Learn all Skills of the Archer class.
Get five Units to join your party.
Select ''Wait'' after using all of your AP.
Defeat 50 Units.(regardless of class)
Defeat 100 Units.(regardless of 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 10.
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 10 Units to join your party.
Get 20 Units to join your party.
Performed your first Class Change.
Change Classes five times.
Change Classes 10 times.
Fuse two Units together.
Fuse Units together 10 times.
Fuse Units together 20 times.
Get 20 total Skills.
Get 50 total Skills.
Get 100 total Skills.
Part with a Unit.
Get 100 critical hits.
Do 400 damage or more in a single blow.
Defeat two Units at once.
Defeat three Units at once.
Use Reaction Skills 100 times.
Get a single Skill's level to MAX.
Learn all Skills of the Warrior class.
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 Longbowman 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 Magician 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.
Save 20 times.
Raise a Unit to Level 80.
Use a Skill so much its usages go back to 0.
Use three Reaction Skills one after another.
Use four Reaction Skills one after another.
Use five Reaction Skills one after another.
Use assist Skills 50 times.
Use healing Skills 50 times.
Use magic Skills 80 times.
Use trap Skills 30 times.
Defeat the Floor 1 boss.
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.