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