Earned the MVP in a ranked playlist.
On a Legendary map, got two Double Kills during a ranked or social match.
You killed a Rockstar in multiplayer.
True veteran of many battles, you are a Spartan Officer.
Got the rank of Lieutenant in any playlist in the new EXP progression system.
Shove a Boomer and then kill him without him splashing on anyone.
Graduated from basic training. Stick with it to earn your Spartan Insignia.
Promoted to Sergeant. Proven in combat, you are a Spartan.
Shove a Hunter off of a pinned and helpless Survivor.
Free yourself from a Smoker who has grabbed you with his tongue.
Kill a Tank without it dealing any damage to a Survivor.
Rescue a Survivor from a Smoker's tongue before he takes damage.
Kill an Infected with a single blow from behind.
Light a Witch with a Molotov.
100 Percent Pass Completion.
Get 100,000 points in Home Run Pinball.
Obtain an overall characteristics average of over 20%
Obtain an overall characteristics average of over 5%
Obtain an overall characteristics average of over 1%
Continue playing to unlock this secret achievement.
Finish playing a versus ranked match
Find and kill an opponent who has the Assassin Achievement
Kill 150 terrorists using only a Pistol
Complete a Cooperative T-Hunt mission with at least one other player.
Achieve the rank of Private 1st Class
5 consecutive player kills without dying
Score 35 points or more in a game.
Win a game by 21 points or more.
Do not throw an interception in a game.
Do not give up any sacks in a game.
Pass for 350 or more total yards in a game.
Gain 100 or more receiving yards with a single player.
Throw 4 touchdown passes in a single game.
Complete a pass to 5 or more receivers in a game.
Return a kickoff for a touchdown.
Win missions in the cooperative campaign
Race and defeat Hector Domingo and take his spot on the Blacklist 15.
Reach Captain Ramirez's position
Get 4 kills in 4 seconds or less in multiplayer
Get 30 kills before being killed in multiplayer
Amass four sacks in one game.
25 Total Combos
Take the Football back from Carlos Ontiveros
Capture General Ontiveros alive
Complete "Red Army Training" in Moscow
Race and defeat Vince Kilic and take his spot on the Blacklist 15.
Race and defeat Victor Vasquez and take his spot on the Blacklist 15.
Has somebody taken you down online? Go and settle the score!
Go online and take someone down to create a Revenge Rival!
Compete in a Burnout Revenge event online.