This quest can be obtained from Ogoi, Kazite Assassin. Ogoi is located in the northernmost point within the city of Berg. Speak with her and select ‘I’d like to talk…’ to learn of the quest. She will ask you to bring her two Beast Golem Scraps. Beast Golem’s can be found throughout the region of Enmerkar Forest, however the below map shows an area where they can be found in relative abundance.
Note: Beast Golem’s are most often found roaming the region at night. They will usually find you before you find them. They move quickly in combat and tend to spam a charge ability. If you notice them approaching you can either try to time an attack before they reach you to interrupt their own attack, or evade the incoming attack and then quickly retaliate. So long as you avoid their charges, the fight should be relatively easy.
Not all of the Beast Golems will drop scraps, but you will have a much better chance of acquiring them through looting their corpses than by relying on random drops from caches and merchants.