[H] Machinariumm, AaAaAA!!!, coupons... [W] L4D2 or holiday achievement game

I have:

[traded] - AaAaAA!!! - A Reckless Disregard for Gravity

[traded] - Machinarium

• 50% off Valve

• 50% off Metro2033

• 50% off Payday

• Coals

I am looking for especially Left 4 Dead 2 or else any nice games with Holiday achievement.