Team Fortress 2 has been updated with five seasonal achievements, a new map and exploding pumpkins for Halloween, which will be live until November 2.
Called the Haunted Hallowe'en Special, the new map is a King of Hill called Harvest and is haunted by the "restless spirit" of Zepheniah Mann. Players will freeze in fear should they come into contact with the ghost and there are also the exploding pumpkins we already mentioned.
The full thing is through here, and you'll notice in the notes that "the mangled corpses of the recently deceased will plague the living with candy".
We have no idea what that means but it sounds good.