Hi!
Eight Steam Trading Cards were just released for Hellish Quart.
You'll get half of the cards just by playing Hellish Quart - you will see them appear in your Steam Library. You will have to trade with other players to get the other half. Collect a full set of Trading Cards and you can get rewards, like additional customization to your Steam profile: emoticons, backgrounds, etc. For each collected set you can craft a Steam Badge!
You can read more about Cards here: https://steamcommunity.com/tradingcards/
Level 1:
Level 2:
Level 3:
Level 4:
Level 5:
Foil:
The 8 Cards to collect:
All this is of course completely optional, and if it's not your thing, you don't have to do anything. But if you are into Steam Trading Cards, Hellish Quart can now join your collection :)