Yea, some of the Nightmare Mercs have different skills for whatever reason lol.Do the Merc skills change with each difficulty? I don't recall the Act 2 merc having freeze aura, at least not on Normal difficulty. It was defense, heal, and attack rating.
It must be nice having an extra minion (grizzly) to help tank. That's what I'm missing with the Act 1 merc, lol. She dies so fast and keeps running into packs of mobs. Spent enough gold reviving her dumb ass. The mercs from normal difficulty weren't doing much better, so I've just been going solo in Act 1. They were all equipped pretty well, some even had better armor than me at times. They can't survive with all those elites. Maybe the gear wasn't quite good enough for Nightmare difficulty.
I never even thought to give mercs full rejuvenation potions. Sh*t. That's great advice right there. Instant heal instead of having to wait.