Did it at first try
As I was planning in the past, I dropped few arrows on the ground and put some in the cube. I tried to not spam javelins.
Merc died immediately, it was too hard to control the attacks of the 3 of them in the beginning. Then I managed to isolate Talic in the north by using decoy. Lured the others 2 down and payed attention for the time they lost aggro on valk/decoy, always switching from the psn javelin to arrows.
I used first the arrows in the ground, in order to avoid they disappear.
Madawc was a pain in the ass...lost aggro lot of times and almost wiped me twice due to the holy shock aura.
Once they died, just killed Talic.
In total I used: 4 healing pots, 2 mana pots, 1 Full rej, ~2k arrows
The battle was shorter than what I expected and pretty fun!
After the fight I struggle to reach to Worldstone chamber WP in level2.
Next time Nihlathak and then Baal