Typhus is more of a mass killer than a character slayer, so if you can get him in amongst the grunts he will mascre them wholesale, but often with DG a lord without termie armour is preferable, say for example you were looking to go up the field in a rhino, then Typhus is a nono, he sufferes for his art in terms of speed, which makes him prone to being shot, also units or more comonly HQs configured to kill Characters can take him out. finally monseiur cartier is spot on about points, playing 1000 points? leave him at home