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