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