The Dvergr are very dangerous intentionally, but to be honest, it's a skill issue on your part. You need to use the Fire Wine + Bonemass if you want to take on fire mages head on. The ice mages are considerably more dangerous.

Remember that Fire Damage is a two-part damage calculation, it consists of a Blunt damage component (Bonemass power mitigation) and Fire damage component (Fire Wine or Yagluth power)

Ice is a bit different, It can be straight ice damage, but it can also have a heavy piercing component like Moder's ice spikes. But even with a resist, you get slowed which is the most dangerous component of ice damage anyway.

I stand by the notion that all the complains about mistlands are personal skill issues, and this new thread does nothing to assuage that.