How about the entire Red Orchestra Franchise pack for Arkham City GOTY? Even if you don't want the games it's a great value and good for trading.
I have Mount & Blade: Warband, Just Cause 2, Serious Sam HD: The First Encounter (x3), Serious Sam HD: The Second Encounter, Magicka, DOTA 2 KEY (x2). Are you interested in?
I am interested in Dead Island: GOTY. I have gifts: Just Cause 2 + DLCS, Portal Bundle, Dead Space 2, Supreme Commander GE, Monkey Island: Special Edition Bundle, From Dust, Frozen Synapse, Waveform + DLC, Crysis 2 - Maximum Edition, Fallout 3: Game of the Year Edition
Droplitz, Toki Tori, Dungeons of Dredmor, The Polynomial - Space of the music, The Binding of Isaac + DLC, Geometry Wars: Retro Evolved
Left 4 Dead 2. Something interesting for You?
Borderlands 2: Mr Torgues Campaign of Carnage (Steam Key) + Dota 2 (Gift) for CS:Complete?
I dont play TF2, so i know nothing about the keys, but what about Dont Starve for Batman AC?
Interested in DotA 2 items, Some THQ bundle games, humble indie bundle 7 not bta and amnesia forntight?
Just Cause II (base game) + Frozen Synapse or Portal bundle + Frozen Synapse (all gifts) for Dead Island GOTY?
I'm interested in mann co keys!
Batman: Arkham City GOTY - 4 keys
Battlefield: Bad Company 2 - 6 keys
Counter-Strike Complete (with CS:GO) - 7 keys
Darksiders Franchise Pack - 6 keys
Dead Island: GOTY - 6 keys
Saints Row: The Third - The Full Package - 5 keys
Street Fighter X Tekken - want 9 keys (or Super Street Fighter IV Arcade Edition Complete Pack)