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