The Australian Christmas 2011 Title update for Team Fortress 2 has 13 achievements.
Be part of a team that wins within two minutes.
Win a round in which the enemy team has attempted to capture your final control point.
Play through a back-and-forth battle for 15 control point captures.
Collect three gifts dropped by opponents.
Kill an enemy who is capturing a control point with a critical hit.
Play in a game with five or more players from your Friends list.
Win 137 Rounds.
Capture the final control point within five seconds of your team capturing the previous control point.
Capture a control point within 12 seconds after exiting a teleporter.
Kill a player by pushing them into the cauldron fire.
Get one or more kills as all nine classes in one round.
Kill two people on the roof of the center control point in a single life.
Achieve 7 of the achievements in the Foundry pack.