Overlord

If, like me, you already completed all the dungeon challenges for Dungeon Overlord achievement, but have started a new game since downloading Raising Hell then to earn this achievement you only need to complete the following twenty-four challenges:

1 Undead Swordsman
2 Undead Commander
3 Undead Musketeers
4 Undead Shocktrooper
5 Undead Reaper
6 Undead Challenge (Unlocked after completing 1-5)

7 Halfling Cook
8 Halfling Rocklobber
9 Halfling Spearman
10 Halfling Swordman
11 Halfling Challenge (Unlocked after completing 7-10)

12 Dwarf Bomber
13 Dwarf Crossbowman
14 Dwarf Miner
15 Dwarf Warrior
16 Dwarf Challenge (Unlocked after completing 12-15)

17 Troll
18 Rock Giant
19 Boulder Beast
20 Monster Challenge (Unlocked after completing 17-19)

21 Skull Boar
22 Skull Rat
23 Skull Stag
24 Skull Tribe Challenge (Unlocked after completing 21-23)