[H] Bunch of keys [W] CS 1.6, CSS, CS:GO, L4D, L4D2, and offers

Note: I would even trade a couple of keys for one game if you'd like. (by couple I mean a bunch)

List of my games:

Serious Sam: The Random Encounter

S. Sam Double D: TAKEN

S. Sam: The First Encounter

S. Sam: The Second Encounter

Humble Bundle 4

Frozenbyte Collection

Frozen Synapse

Spacechem

Zombie Shooter 1

Zombie Shooter 2

inMomentum

Saira

Hacker Evolution Untold

H. Evolution Duality

Royal Difficult 2nd Bundle (4 games,Note: The Desura keys appear opened, but I opened them accidentally and haven't used them)

Feel free to offer (Reasonable offers only.)

NOTE: Don't go away only because they're keys... I may have a low amount of positive reviews, but that's just because I'm new!