On alot of the class intro artifact quests, you can afk alot of the time as the main NPC helper(s) won't die in most cases.

IE:
Hunter, Pull the mob to your NPC helper, feign death.
Priest, Your guy won't die, no need to heal him.

Some other classes, like Paladin's and DKs, are alot more work as your NPC buddy won't do jack once he's down to 1%.