Demonic Infestation is a quest in Might & Magic: Duel of Champions.
To access this quest, the previous quest, Mountain Marauders, must be completed.
Orc shaman Shaar left the field, promising vengeance. Since the surroundings were filled with numerous bandits, the group left to deal with the problem. Ga'arend warns Shaar was tainted by Chaos, which caused her madness. The next day, Ga'arend's suspicion is correct, as a demon lord, ordering legions, faces the group.
The demon lord Garant will try to damage the hero, using Hall of Torment. Plus, his Sweep Attack and Area Blast will also cause some problems. To counter, the hero needs to know which troops should be placed where.