The headquarters in Sanctum believe that their most important duty is to stem the failing cooperation between the Elyos.

That's why they want to reward Daevas who train hard and prove they have team spirit.

You must fulfil the following conditions to receive a reward:

Train and prove your team spirit in the Arena of Cooperation.
Prove your superiority in all areas.

Don't you want to train in the Arena of Cooperation with your comrades too and receive a reward, Player?

Bring me a Victory Insignia[pl:"Insignias"] of Cooperation to prove that you've trained hard. Then you'll receive the reward that Sanctum has prepared.
You receive the Victory Insignia[pl:"Insignias"] of Cooperation when you achieve victory in the Arena of Cooperation in the Crucible Coliseum.

If you bring me a Victory Insignia of Cooperation, I'll give you a reward from headquarters in Sanctum.
It can't have been easy to improve your skills together with your comrades.

But the result you achieved under such difficult conditions is worth it.
You obviously got through the long training okay!

Here's the reward you were promised from the headquarters in Sanctum.

I hope you like it.