Belsirk: So, the hammer spell work for knocking the dragon ? \Enjoy it now, because in theory that is a bug, and probably will be fixed in future patch (The spell does crush damage, if the dragon is immune then should not be affected by the knock effect).
ast486: Actually I just tried it now, with current version.
Doesn't stun the dragon. :-(
They did a shitty job of these dragon battles, mostly because of all the minion hoards! GRRRR!
This dragon is the new though encounter in the game, is a good idea to wait to finish the White Marchs campaign and
be level 13-14 , you can upgrade your weapons even further with it. I think there are two items made for this battle (a mantle and sword with the beast slay property).
I had to add the Beast slayer property to weapons for two of my characters. And gaining time with the confusion spell and summons (Even Yoshi had better time with Mario than my summons :P), probably Grieve Mother would have a similar effect (Though will become very hard to gain new focus after the minions got killed).
Basically, you need to have the weapons slots with weapons for dealing with the dragon, the spectres and the ice creatures. The crush type of damage are almost useless here, so the monks will have a hard time, and probably you need more than 2 characters able to resurrect people (By lore or by class feature). Piercing damage or those weapons which can bypass DR (I think many piercing weapons have those) are very important for this battle.
If you are using the new rouge, remember to upgrade her shell-armor and give her the ability to heal a portion of her health (The one which restore 40% of health) because is the only way to restore health for her. And remember, she can't drink potions or food, so you can use her item's slots for summons and/or scrolls.
IF the creatures are killing you, then practices to move them to a center area for a massive blasting.
By the way, I'm sure that if you redo the new monk's levels, could achieved 120 or more of Deflection, this could give him the opportunity to give time to the others to clean the area meanwhile he is surrounded by the ice creatures and the dragon (I had a paladin with 112 in deflection and was the key to my strategies, yet the Patch 2.0 reduces his utility). Don't forget that the dragon's breath attack hit everyone in its reach, so even if you don't confuse or dominated it, you can use him for killing the enemies.
My hate to this new campaign is due this encounter, almost all the new items, the special pet summon and the new monk are useless for this specific battle. What was in Obsidian's minds when were making the dragon stats?
P.d. I defeat the dragon in the nightmare difficult and without the special anti-dragon skill that you can gain when facing the Adra dragon, yet you truly need to be prepare many elements for this battle (not ego here, I definitively didn't maximized my party nor the options having a hardest time as result).
P.d.2 You can completed the quest with a high Might or Resolve stat, (Probably only resolve, I can't remember), the dragon lives but give you one of the 3 special items in his nest.