The Cold Darkness Awakened Add-on for Rise of the Tomb Raider has 10 achievements worth 250 gamerscore.
Cold Darkness Challenge: Collect all 8 documents
Cold Darkness Challenge: Rescue 6 prisoners
Cold Darkness Challenge: Kill 20 enemies with Dragonfire Shotgun Rounds
Cold Darkness Challenge: Pick up 6 different weapons
Cold Darkness Challenge: Kill 75 enemies in a single Cold Darkness run
Complete Cold Darkness
Cold Darkness Challenge: Get 5 headshots with the regular arrows in 1:00
Cold Darkness Challenge: Open 6 upgrade pry chests
Cold Darkness Challenge: Shut down all the towers without any mistakes
Cold Darkness Challenge: Complete Cold Darkness without dying