Mmh well, at the moment is quite breakable, there are some lame tactics (sneak/stealth abuse, skill/situation that mess up enemy aggro, pathfinding abuse) and some op stuff (poly-rogue wombo combo) that made classic mode not so hard, even in solo mode without lone wolf.
I think many thing will be balanced at release, anyway i hope for a difficult tier really challenging, even for a min-max player.
