How to Unlock the UNSC Achievement

"Halo 3" was released for the Xbox 360 in 2007, and included 50 achievements worth 1000 Gamerscore points. Achievements are additional objectives for a game, that, when unlocked, are added to your Xbox 360 profile. The "UNSC Spartan" achievement is worth 15 points. To unlock this achievement, you must earn twenty experience points while playing multi-player games. The points accumulate and do not need to be earned within one multi-player game.

Instructions

1. • 1

     Select "Multiplayer" from the main menu.

   • 2

     Select "Ranked Match."

   • 3

     Complete the multiplayer match as the winning team to earn one experience point for each win.

   • 4

     Finish in the top one half of all players to earn an additional experience point

   • 5

     Continue playing until you have reached 20 experience points total, at which point "UNSC Spartan" will unlock and be displayed on the bottom of your screen.