For manual on Shaman I've found Scream for Me Eddie's present basic (removes invincibility and place loads of marks) coupled with any decent damage AOE hitter and someone who gives ensures all hits land as Perfect such as Desert Marauder (or just good manual timing) can one shot this dungeon as long as you use Eddie first to get 15 marks on everyone (and you have enough health to survive the first wave if AI goes first plus any counters/revenges).