[H] Hitman, Bioshock, Awesomenauts, Terraria, Monaco, FEZ [W] TF2 keys

All of these are Humblelinks.

4 Keys:

Hitman Collection (Hitman: Codename 47, Hitman 2: Silent Assassin, Hitman: Contracts, Hitman: Blood Money, Hitman: Absolution)

2 Keys:

BioShock
BioShock 2
Garry's Mod

1 Key:

Awesomenauts + Awesomenauts Cluck Costume
Battlestations: Midway
FEZ
Guardians of Middle-earth + Smaug's Treasure DLC
Mafia II
Monaco: What's Yours Is Mine
Terraria
The Lord of the Rings Online: Steely Dawn Starter Pack
X-COM Oldies Pack (X-COM: Apocalypse, X-COM: Enforcer, X-COM: Interceptor, X-COM: Terror from the Deep, X-COM: UFO Defense)

4 ref/ToD:

Cities in Motion 2
Gotham City Impostors: Professional Kit
Thief Gold