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