Blue are elites - they just turn up in packs as opposed to single (purple/yellow). The amount of health is type specific and they can also roll with extra health. With that said, I wonder if they were the frog type enemies that constantly burrow underground? They're a pain in the arse!So, what's the deal? Played an act 5 rift last night on expert. There were a few enemies--these really tiny creatures--that took a million hits to die. They only had blue names, too, so I don't think they were elites. Their names said they were arcane enchanted. How do I kill them faster? Using a lvl. 65 crusader.
In terms of killing them quicker, increase your DPS or try and stun the buggers so that they can't burrow.