[Heywood]

I think what he's saying is that unless you take bring a raid force, Garadain WILL get killed by the orcs.

I know the wiki says you can small man group it but like OP is saying, you have to invis past the orcs, kill the Chief (and subsequently one of his buddies), invis through the orcs again AND turn in the head to Garadain.

Problem with that is you have a small window of time to complete that. I play on red, so I tried to kill chief on my druid and guildie monk. We were able to kill the chief, but Garadain was long dead before I could turn in the head.

Unfortunately like Paul is saying, ring 8 is supposed to be completed with a big crew. Point of the quest is to kill the Chief AND keep Garadain alive.