The Thieves Guild Add-on for The Elder Scrolls Online: Tamriel Unlimited has 6 achievements worth 220 gamerscore.
Complete quests, defeat bosses, and explore delves to become the Hero of Hew's Bane.
Complete quest "Prison Break" in Hew's Bane.
Join the Thieves Guild by completing quest "Partners in Crime" in Hew's Bane.
Steal every treasure from Kari's Hit List and place them all within the Thieves Den.
Complete 1 heist for the Thieves Guild without being detected.
Assist each member of the Thieves Guild in resolving personal matters.