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