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.
Aut is a good game. But with needing good specs or stand. So here's how afk grind. 1) need a vip server 2) Try afk for 3-5 hours. You can does more. But Try it on 5x event. 3) Try asking your friend within you. Reason is that it will help you more and it will mostly spawn curse orb. 4) Most importantly, have fun :) That's all.