What you need to understand is that [%dic:STR_DIC_M_LDF5a_5011_Vri_1stBoss_Q_Fi_Nmd_65_Al] is Fourth Dragon Lord Beritra's right claw. Take him out, and the lower echelons won't be able to sustain the campaign.
Tarbosch rarely ventures outside; Beritra likes to keep him close. He appears at the Sillus Fortress to command the Balaur troops there, but not always.
Just remember, I'm making a hero of you. All I want in return is a trip home.
I heard [%dic:STR_DIC_N_LDF5a_Klaf_E] is still alive.
I should have your head impaled on the wallin his stead, but I thought I'd give you an opportunity to explain.
You're telling me you made a deal with an Asmodian prisoner? That's not just stupid, [%username], that's treason!
You say this scum wants a trip home? We'll be sure to send him on his way. May his black ancestors greet him with clawing hands and horrible screeches.
As for you, you've put me in a bind. I can't very well kill the hero of Katalam, can I? Here. Take your reward and begone from my sight!
Locate and vanquish [%dic:STR_DIC_M_LDF5a_5011_Vri_1stBoss_Q_Fi_Nmd_65_Al]. ([%2]/1)
Report back to [%dic:STR_DIC_LDF5a_Tiryns_Commander].
Vanquish Brigade General Tarbosch of the Pashid Legion and bring Beritra's forces to their knees.
Based on the information from the spy Fregarth, you managed to vanquish Brigade General Tarbosch of the Pashid Legion. In exchange he asked for extradition back to Asmodae.
You reported all of this and your defeat of Basti to Tirins. He was not impressed. Instead he accused you of treason, promising to send the Asmodian spy to greet his ancestors. However, it wouldn't do to execute the hero of Katalam, so he rewarded you for your "loyal" service.