Have

Steam Gifts

R.U.S.E.
All Deus Ex:HR DLC
Orcs Must Die 2

Steam Keys

Most of Humble Bundle 8 (ask if you're interested)
King Arthur Complete Collection
DEADLIGHT
Iron Brigade
Toy Soldiers
Mark of the Ninja
Section 8
SpaceChem
Two World 2
Eschalon Book II
iBomber Defense Pacific
Party of Sin
Awesomenauts
Demigod

Want

Borderlands 2 (gift or key works fine for me)

I am mostly interested in Bl2, but if you make an offer, I might take you up on it!
I am also willing to go first with keys or use a middleman.