Matras says that he will be passing the Base Tower on his way to the Steel Citadel, and he has asked you to distract the guards there. More specifically, he says that he will give you something nice if you kill them and collect 744 Red Stones.

Monsters to Hunt - Body Destroyers, Soul Dominators, Labyrinth Watchmen, Labyrinth Mystics, Labyrinth Captains, Labyrinth Seers, Passageway Captains, Passageway Guards, Passageway Mystics.