I can offer 5 booster packs for your "free" multi-only key. I hope you don't expect keys or something for a demo-like game. It doesnt even have single player, nor co-op campaign.
Any of these for the CoH2 MP Key? Feel free to add me for discussion! :)
Abyss: The Wraiths of Eden (Bioshock look-a-like Hidden Objekt game)
Bridge Constructor
Broken Sword 2
C-RUSH Cities in Motion 2
Draw a Stickman: EPIC
Orcs Must Die! GOTY
Ravensword: Shadowlands
Sanctum: Collection
Savant - Ascent
Serious Sam 3: BFE
Shivah: Kosher Edition
Strategic War in Europe
Syder Arcade Symphony
Tobe's Vertical Adventure
Type:Rider
Steam Keys:
Alien Zombie Megadeath
Astro Tripper
Bumbledore
Escape Goat
Evo
Gateways
Iesabel
Kairo
Little Racers STREET
Mayhem Intergalactic
Mutant Storm: Reloaded
SOL: Exodus
Space Giraffe
Sparkle 2
Still trading