Got thinking about the assassin skills and thought of a fun little trick for runners. Suppose you get to a spot completely body-blocked by monsters. Rush in, aggro them, then turn and run using Shadow Walk. As soon as the monsters get past your start point, activate sprint. Shadow Walk ends, teleporting you back, behind the monsters, and moving at 125% speed on your way to your destination.
Or imagine another idea, for Tombs. Clear your directly opposing team, and rush the gate holding the other teams back. Let one get close, and activate shadow walk and death's charge that person. Start attacking, and hopefully kill them. Then walk ends, and you are safely back on your side of the door, healing for the next try or one of the other teams opening it.
Just ideas, but I wanted to get them out there, and see what else people have come up with for chapter 2.