Here is the full list of all 37 Chained Echoes achievements.
Complete the Reward Board.
Defeat all Unique Monsters.
Learn all skills with all characters.
Learn all skills for Tomke.
Complete the bestiary.
Buy all Deals.
Beat the game.
Find the platypus gang’s treasure.
Slay the ultimate boss.
Find 12 Class Emblems.
Find the Crab Village.
Get a Reward Board chain of over 120.
Get all ultimate weapons.
Finish all side quests.
Read all lore books.
Sell 1 piece of crap.
Master all Sky Armor weapons with one Sky Armor.
Find all recruits.
Finish act III.
Get a Reward Board chain of over 80.
Flee 42 times.
Finish act II.
Win 200 battles.
Find 6 Class Emblems.
Get a Reward Board chain of over 40.
Master a Sky Armor weapon.
Finish act I.
Reclaim your Sky Armor.
Get a Reward Board chain of over 20.
Win 100 battles.
Join the Adventurer’s Guild.
Master a Class Emblem skill.
Win 50 battles.
Disturb 60 birds.
Get a Reward Board chain of over 5.
Find a Class Emblem.
Finish the prologue.