As a reward for 60,000 players earning the Connecting Fights achievement, Valve released a beta version of the Blood Harvest campaign for Left 4 Dead 2.
There are currently 101 achievements for the PC version of Left 4 Dead 2 (one of which, Valve Gift Grab 2011, can only be obtained in December) and 65 achievements for the Xbox 360 version. There are 73 achievements in all for the PC version of Left 4 Dead, but only 65 for the Xbox 360 version the Outbreak achievement is not in the Xbox 360 version of the game and Survival Pack on Xbox 360 adds no new achievements due to technically being only a patch, not a DLC. Left 4 Dead includes achievements for Steamworks and Xbox Live.
