Here is the full list of all 13 NECROPOLIS: A Diabolical Dungeon Delve achievements.
Traverse down a Level without using an elevator.
Escape the Necropolis.
Die from a trap.
Recover your first Codex.
Find and equip a new suit of armor.
Slay an enemy using a power attack.
Die for the first time.
Survive longer than your average dungeon delver.
Craft your first item.
Eat or drink an unidentified item.
Recover all Codexes.
Obtain fifteen thousand gems.
Learn to craft everything.