03 Jun 2010 03 Jun 2010
To get a Doghouse reward, you need to score 9 consecutive kills without dying on a multiplayer match. You will be awarded a red doghouse for your character to ride atop and it also has better lock on for the machine guns.
The easiest way to get it is to boot up a multiplayer match with a second controller, stick the settings to as much time and score as you can and just keep killing the idle controller 8 times, then killing yourself and repeat until you get it. Alternatively you can play normally and just hope you get it.