The Two Cities Update Title update for Team Fortress 2 has 21 achievements.
While rocket jumping, use a rocket to kill a rocket jumping enemy who also kills you with a rocket.
Pit 100 enemies in Rottenburg.
Kill 15 enemies in the rafters above the central capture point.
Kill 5 robots in a single explosion from detonating a sentry buster.
Play an advanced mission without losing a single gate in Mannhattan.
Kill 500 gate crashing robots in Mannhattan.
Block 5,000 damage with the shield as a Medic in a single life.
As a team, pit 10 guys in a single wave in Mannhattan.
As a Sniper collect $500 in a mission without running over the currency packs.
Ooohh Ooh Ahh Ahhhh! ...in Mannhattan
Play an advanced wave in Rottenburg without the bomb entering the town.
Kill a tank before it crashes through the barrier in Rottenburg.
Kill 5 enemies with a single rocket while upgraded with rocket specialist.
Win a round in which the enemy team has attempted to capture your final control point.
Win 141 Rounds.
Win 140 Rounds.
Win 139 Rounds.
Stun 50 robots while upgraded with rocket specialist.
Use one ÜberCharge to quickly revive 2 teammates within 5 seconds.
Wipe the other team with 12 or more players on the server.
As a team, kill 50 stunned radiowave robots in an advanced mission in Mannhattan.