[H]sleeping dogs, Serious Sam 3: BFE, Mirror's edge, Terraria [W] offers

Anything from the following list for Mirror's Edge?

FTL, The Binding Of Isaac, Home, Galactic Arms Race, Dynamite Jack, Solar 2, Crayon Physics Deluxe, Sword & Sworcery EP. Isaac is a gift, the rest are Steam keys.

LIMBO tradable for Terraria?

arma 3 alpha lite for mirror's edge?

Terraria for Darkness II or Spec Ops: The line (both are keys)?

mirror's for gmod