Here is the full list of all 63 The Wall Mustn't Fall achievements.
He was one of a kind. How could you?
Beat the game for the first time.
Beat the game on Sacrifice I.
Beat the game on Sacrifice II.
Beat the game on Sacrifice III.
Beat the game on Sacrifice IV
Beat the game on Sacrifice V.
Beat the game on Sacrifice VI.
Beat the game on Sacrifice VII.
Beat the game on Sacrifice VIII.
Beat the game on Sacrifice IX.
Beat the game on Sacrifice X.
Beat the game without any sacrifices on hard.
Beat the game on Sacrifice I Hardmode.
Beat the game on Sacrifice II Hardmode.
Beat the game on Sacrifice III Hardmode.
Beat the game on Sacrifice IV Hardmode.
Beat the game on Sacrifice V Hardmode.
Beat the game on Sacrifice VI Hardmode.
Beat the game on Sacrifice VII Hardmode.
Beat the game on Sacrifice VIII Hardmode.
Beat the game on Sacrifice IX Hardmode.
Beat the game on Sacrifice X Hardmode.
Has joined you.
Beat level 100 with your hero being the only one that ever equipped a weapon.
Beat level 100 with your hero never equipping a weapon after stage 1.
Purchase an upgrade.
Destroy 10 Ankhs
Destroy 50 Ankhs
Destroy 100 Ankhs. Going to need the dental records for this one.
Get first Alchemist synergy
Get second Alchemist synergy
Get first Constructor synergy
Get second Constructor synergy
Get first Cultist synergy
Get second Cultist synergy
Get first Demolitionist synergy
Get second Demolitionist synergy
Get first Fighter synergy
Get second Fighter synergy
Get first Holy synergy
Get second Holy synergy
Get first Hunter synergy
Get second Hunter synergy
Get first Mage synergy
Get second Mage synergy
Get first Marksman synergy
Get second Marksman synergy
Get first Merchant synergy
Get second Merchant synergy
Get first Summoner synergy
Get second Summoner synergy
Get first Warlock synergy
Get second Warlock synergy
Use a good eraser, they can remove everything.
Beat stage 100 without buying any ducks
Beat stage 100 without buying any ducks, merchants, or gold generators