I've posted this response in other similar threads about this fight, but..
I actually thought the fight was way too easy. It's supposedly designed for level 9-10 but I completed the fight easily (none of my party members died) at level 8. If anything, these are super weak enemies for being level 10ish. If I was level 10 I could finish the fight in about 3-4 rounds without losing anyone. It might even be possible to finish the entire fight without taking any HP-damage, at that level.
The fight with the voidwoken and undead was actually more difficult than the end fight, for its level. Several ranged guys spread out on different elevated platforms in an ambush position that suddenly pop-in when you get close enough.
At least with the final fight you can see where everyone is ahead of time (before you start the fight) and you basically have infinite time to prepare your strategy/tactics before the fight even begins.
This is a big problem for me in the game at the moment. Quest fights are always way too easy because most of them has some sort of dialogue before, so you can simply see every enemy and position accordinly before finishing the chat. There should be some sort of proximity trigger for these kind of fights, as this makes is retardly easy to fight. This gets you the upper hand even when lower level, allowing one to sneak past enemies, place barrels at will and simply set terrain to their advantage while the whole enemy team just sits and watches while chatting.
And to note that I haven't even done that in the final fight and still found it an easy encounter. The only dificulty one might have is Alexander big health and resist pools, but if you're playing/build right that should be easy to deal with, specially if you have a marksman elf with rage+sneak+snipe+racial skill to open the fight with, which means you almost instanly oneshot him.
