The Karak Azgaraz Add-on for Warhammer: End Times - Vermintide has 8 achievements worth 200 gamerscore.
Complete: The Cursed Rune
The Cursed Rune: Take no team damage during the Quarry event
Complete: Chain of Fire
Chain Of Fire: Complete the final event without stopping the ignition sequence
Complete: Khazid Kro
Khazid Kro: Complete the Brewery event in less than 240 seconds
Khazid Kro: Get timed explosives in place with less than two seconds left
Kill a Stormvermin in one blow using Bardin's Pick