Here is the full list of all 60 Ziggurat 2 achievements.
Fail a Quest
Get defeated by a Guardian
Finish the Tutorial
Improve a weapon using the Anvil
Find all pieces of the Master Key
Reach Experience Level 2 in a run
Unlock all creatures in the campaign bestiary
Complete Chapter 1
Complete Chapter 2
Complete Chapter 3
Complete Chapter 4
Complete Chapter 5
Complete Chapter 6
Complete Chapter 7
Complete Chapter 8
Complete Chapter 9
Complete a Quest
Unlock all weapons in the campaign
Unlock all amulets in the campaign
Unlock all perks (excluding hero perks) in the campaign
Unlock all heroes in the campaign
Defeat 1,000 enemies
Defeat 5,000 enemies
Defeat 10,000 enemies
Win a fight with an active modifier
Reach mastery level 10 in a weapon, hero or amulet
Improve a skill in the Laboratory
Improve all skills of the same category in the Laboratory
Reach Floor 10 in the Infinite Dungeon
Play the Daily Challenge and reach Floor 2 or better
Win the Ziggurat Trial in Classic Modes
Complete 60 waves in the Gauntlet
Perform 4 Oaths in the same run
Purchase all items offered in a shop
Drink from 20 Fountains
Carry 3 main weapons of the same element
Defeat a Guardian
Reach Experience Level 10 in a run
Reach Experience Level 20 in a run
Reach Experience Level 30 in a run
Win a Quest without using level ups
Win a Quest using only your Wand
Defeat a Guardian without suffering damage
Defeat a Lost Soul with the Skull of Xanatos
Complete a floor without using the Dash or the Hero skill
Win all special fights
Get defeated by a trap
Attract 20 or more items in a single use of Syphon
Push 20 enemies or more in a single Shove
Completely refill your Mana pools in a single use of Shell
Defeat 15 enemies in a single use of Sacrifice
Defeat 5 enemies in a single use of Shroud
Win a fight without firing a single shot
Defeat 5 enemies in a single use of Vault
Hit 8 enemies with a single use of Flask
Defeat 10 enemies with a single use of Blaze
Use Shield Bash on a Vanguard
Win a Chained Chest challenge
Beat the Ziggurat Trial in Master difficulty or higher
Extend the duration of Trance over 15 seconds