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