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