Fallout: New Vegas A World Of Pain Mod

Adds 95 intense locations to the wasteland filled with enemies and loot. They vary from small Gas Stations to huge maze-like sewers and derelict factories. Adds several days of new gameplay possibilities. A massive new linked Underground complex awaits filled with quests, NPCs with dialogue, vendors and some of the toughest enemies you will encounter anywhere in the game. Also adds many modified weapons, armors and items to the game with enhanced stats to help and hinder you throughout.
Everything has been done using vanilla content at this stage so the filsesize should still be tiny. That said everything is complete and navmeshed and there should be no gaps or unfinished interiors. The final version should be complete before the end of 2011.