Play games
Choose the game that interests you and play itfor free.
Complete the quests
Every game has some quests for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
Anyone did this mission? What screenshot did you send? I send one where you can see my username and that I achived HQ lvl 7. You cant get HQ lvl 7 whitout finishing stage 48.