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.
Yep...Patch notes...Vaulted...also bandage bazooka is temporarily Vaulted i think as i never saw it and rip for those guys who hasn't yet finished the challenge about it.