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.
1. This quest starts on Hell Bound (no map yet) with Matras. He wants you to bring 744 Red Stones from mobs on the first and second floors of the Base Tower.
2) The monsters you need to hunt in the Base Tower are Body Destroyers, Soul Dominators, Labyrinth Watchmen, Labyrinth Mystics, Labyrinth Captains, Labyrinth Seers, Passageway Captains, Passageway Guards, Passageway Mystics. Will post pictures when I can get access to those mobs.