The Descent Add-on for Call of Duty: Black Ops III has 10 achievements.
In Gorod Krovi, use the Gigant Beam to kill 20 Zombies in one activation.
In Gorod Krovi, kill 8 zombies with a single Dragon Strike.
In Gorod Krovi, complete a Lockdown Event.
In Gorod Krovi, wield the Gauntlet of Siegfried.
In Gorod Krovi, kill 10 zombies at once with the Guard of Fafnir.
In Gorod Krovi, ride a Dragon.
In Gorod Krovi, the one must be freed.
In Gorod Krovi, complete Time Attack: Round 20.
In Gorod Krovi, complete all solo Trials in one Zombies game.
In Gorod Krovi, launch 10 zombies into the air at the same time.