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