There is local multiplayer, so you need 2 controllers.To get this achievement you need a win with each of 12 characters you can choose from.
Choose Capture the flag, Score to win 1, time limit doesn´t matter and start a match. In match go for a flag represented by a symbol and bring it back to your starting location. You can finish match in less than 30 seconds. Approx within 15-20 minutes you can get this achievement.