So, you battle-hardened MvM vets think you've got that whole "stopping murderous waves of robots" thing figured out, huh? Well, re-check those figures, because the robot hordes just added a deadly new class to their clanking, soulless ranks: The Mecha-Engineer! And as the incredible art above this paragraph illustrates, it will be over one hundred feet tall! (It will not.) Not to worry, though, because it looks like Engineer will also be one hundred feet tall! (He also will not.)

The sprawling Big Rock is the largest MvM map yet, which means the attacking robot hordes will have an extra-long journey to reach the Mann Co. base you'll be defending. If that sounds like the easiest MvM map ever devised, you're right! Merry Smissmas everybody! Well, you would be right if Gray Mann hadn't invented the deadly new Mecha-Engineer class. These Grinch-like Smissmas cakewalk destroyers can skip huge areas of the path with their teleporting ability, and also teleport other robots forward instantly with their "telling other robots about the teleporter" ability.

Much like last year, there are two kinds of special crates in the world this Smissmas season.
The Naughty crates contain this year's set of limited edition festive weapons, while the Nice crates are full of new community winter-themed items. The crates will only be available until January 3rd, 2013, so get your Naughty and Nice keys from the Mann Co. Store today and unlock
them while you can!