Build a road with 15 or more segments.

Collect 20 resources in your hand.

Interrupt the longest road belonging to an opponent.

Win a game with more than a 5-point advantage.

Rob your opponents 10 times in a single game.

Move the Robber to a player who currently holds no cards in his hand.

Find 5 treasures in a single game.

Win a game by having the Largest Army and the Longest Road.

Win a game without trading (fellow players AND bank).

Win a game without building a city.

Build settlements on all the islands in a Seafarers scenario.

Reveal 10 fog-covered hexes in a single game.

Play 12 Knight Cards in a single game.

Place the Robber on a hex where he will affect no one.

Possess at least 3 harbors.

Build your roads, settlements, and cities exclusively on coasts.

Build all your settlements and cities next to a single type of resource and win.

Only trade with your fellow players at least 2:1 in your favor and win.

Become "Defender of Catan" five times in a single game.

Win a game where you always had more Knights than City Improvements.

Get all 3 Metropolises in a game.

Have three Cities with City Walls in a game.

Cause 5 Barbarian attacks in a game.

Play and defeat all the computer characters in custom games.

Build a Settlement or a City at every number in a game.

Trade 42 times 1 Lumber for 1 Wool in a game.

Build a Mighty Knight, a City Wall, and a Metropolis and move the Merchant in a game.

End the game having never lost a City to the Barbarians while never building a Knight.