Does kill the Forgemaster when fighting the Arbaziloth affects the bosstiary?

Question

According to Test Server I know there is an easy way and a hard way to fight the boss Arbaziloth (Final boss the quest "No rest for the wicked") but, how does it affect the bosstiary?

The forgemaster is in the bosstiary?

Do we still get the bosstiary if we kill the forgemaster?

Answer 1

It doesn't affect the bosstiary, only the loot:

And no, The Forgemaster is not in the bosstiary. If you don't kill The Forgemaster, you can access The Doomforge. Additionally, if you kill Arbaziloth 10 times on hard mode, you will be rewarded with an Inferniarch Weapon.