They really need to look at this. I downloaded the game a few days ago and been playing and it's just infuriating early game when your hero dies and gets a horrible injury. I basically ragequit or reload at that point. Of the weak early enemies, wolf packs seem to be the worst enemies that can just gib a unit on you because they cast berserk and then run across the map and smash the same unit.
Wolves don't berserk. Great wolves can cast 'Howl' which gives an attack bonus to all of its allied units, but its not the same as Berserk.
And while wolves do get a lot of movement points, the worst for this is actually Stalkers (the panthers) who have about the most tactical-map movement points I have seen of any unit.