I am not sure if it is just me but Wraith is very powerful. His DPS is incredible and his armor is better than average. I am not seeing where he has a weakness. I have played many game and have been wiped by Wraith with us barely getting past his armor. I am posting this as feedback of my experience. But I will admit that if the monster is Wraith I am likely to just DC and try a different game.
Wraith is the monster you want to caugh b4 lv 2. At lv 2 it shines if get you out position, so stay together.
What is your level, btw?