Overview: Each of the four major DLCs (Dead Money, Honest Hearts, Old World Blues, Lonesome Road) adds its own set of achievements, often tied to completing the main story of the DLC and specific side objectives.
- Dead Money: 'Cash Out', 'Having a Ball', 'Fireside Chats'.
- Honest Hearts: 'A Light Shining in Darkness', 'Restore Hope', 'O Father, Where Art Thou?'.
- Old World Blues: 'A Brain's Best Friend', 'Spinal Tap', 'Cardiac Arrest'.
- Lonesome Road: 'The End', 'Warhead Hunter', 'Condemned to Repeat It'.
Strategy: Complete the main quest of each DLC and then explore thoroughly for any remaining side objectives or unique challenges. Some DLC achievements are quite difficult.