[H] games [W] mount and blade (collection or one by one)

i have these KEYs:

Serious Sam Double D /
King Arthur /
Zombie Shooter 1 /
inMomentum /
Your Doodles Are Bugged! /
Zombie Shooter 2 /
Hacker Evolution: Untold /
Future Wars /
Greed: Black Border /
Trapped Dead /
Grotesque Tactics: Evil Heroes /
Twin Sector /
Flatout

WANT

mount and blade collection or one by one

You can choose multiple keys for collection.

we can use middleman