For those confused, the latest patch changed the "spawn" levels of the enemies here from *10* (cakewalk) to *20* (holy-crap, wtf is going on) so anyone who has not played this with latest patch need not apply for comments here. The combat was very easy and now it is.. not
So the void dragon fight is actually a huge challenge now, enemies hit extremely hard and have a variety of effects too (and they respawn, so you want to stun them, but not kill them), where before Astarte could literally outheal the enemies with a random heal from you, now you have to actually protect her actively. Only large scale crowd control and stun attacks on the dragon make it managable.
This change was one of the major balance changes Larian did recently.
Also just as an aside.. but you can stun the dragon and heal Astarte yourself, it was needed even when I did this boss on the pre-patch fight levels, but now it's gotten a major tactic. I don't even bother going anywhere closer than Astarte stands to attack the dragon, I just hold enemies away from her via ice-walls and attack dragon with ice shards and anything that can freeze or stun.. and meteor shower ;P
