- Make your way to the Nashkel Mines towards the south of the map
- Enter the mines and descend to the fourth level (note that level 3 has plenty of traps)
- The fourth level is essentially an underground lake with a giant rock in the middle, enter the rock
- A little bit to the north and directly to the east is Mulahey standing inside of his room, speak with him and eventually combat will ensue.
- Defeat Mulahey and loot a scroll from his belongings and the achievement will unlock after a narrator cut scene plays.