Left 4 Dead players get a Crash Course

Valve Software announced that it will release the second downloadable expansion to Left 4 Dead called Crash Course on the Xbox 360 and PC next Tuesday. The Crash Course DLC includes a brand new campaign that ties the plot missing in between the No Mercy helicopter ride and the events in Death Toll. Crash Course will be playable cooperatively and in Versus mode

And on a related note Left 4 Dead has received a few update this week offering 10 new achievements and some minor tweaks. Also related, the Left 4 Dead 2 demo will be ready for primetime on Oct. 27, according to Valve. The full game is set for released November 18.