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