Space Hulk had Steam trading card support added on August 15, 2013. There are 7 cards in the series, 4 of which you'll receive for purchasing and playing the game.
Trading Cards
Foil Trading Cards
Badges
Level 1
Veteran
Veteran
Level 2
Iron Halo
Iron Halo
Level 3
Crux Terminatus
Crux Terminatus
Level 4
Redeemer
Redeemer
Level 5
Angelic Strike
Angelic Strike
Foil Badge
Black Rage
Black Rage
Booster Pack
Emoticons
:eagle:
(common)
(common)
:evilskull:
(common)
(common)
:bloodangel:
(uncommon)
(uncommon)
:powersword:
(uncommon)
(uncommon)
:genestealer:
(rare)
(rare)
Profile Backgrounds
Genestealer
(common)
(common)
Terminator
(common)
(common)
Calistarius
(uncommon)
(uncommon)
Relic Keeper
(uncommon)
(uncommon)
Broodlord
(rare)
(rare)