Completed Chapter 4, Episode 5 of Spartan Ops without losing a generator on Heroic or harder.
In Castle DLC matchmaking, killed 5 enemies during a match by running them over.
In Castle DLC matchmaking, destroyed 2 vehicles during a single game.
In Castle DLC matchmaking, disintegrated 6 enemies using Forerunner weapons.
In Castle DLC matchmaking, assassinated an enemy who is using a Hardlight Shield.
In Castle DLC matchmaking, healed a near-death teammate with Regen Field 5 times.
In Castle DLC matchmaking, got two direct Spartan Laser kills in one match.
In Majestic DLC matchmaking, perform a melee kill right after using Thrust Pack.
In Majestic DLC matchmaking, kill 3 enemies while they are using Jet Packs.
In Majestic DLC matchmaking, got 4 kills using the SAW without dying.
In Majestic DLC matchmaking, got a Double Kill or higher with one Pulse Grenade.
In Majestic DLC matchmaking, killed 5 enemies while Active Camo is active.
In Majestic DLC matchmaking, killed 5 enemies while Promethean Vision is active.
In Majestic DLC matchmaking, performed 5 'airsassinations.'
In Majestic DLC matchmaking, assassinated an enemy who's in zoom mode.
In Crimson DLC matchmaking, killed an enemy with melee when landing from a Man Cannon.
In Crimson DLC matchmaking, shot an enemy who's airborne from a Man Cannon.
In Crimson DLC matchmaking, scored the killing blow on a Mantis.
In Crimson DLC matchmaking, boarded an enemy Mantis.
In Crimson DLC matchmaking, killed 20 enemies using the Mantis' stomp attack.
In Crimson DLC matchmaking, killed 20 enemies with a detached Machine Gun Turret.
In Crimson DLC matchmaking, got a kill while airborne in a Warthog.
In matchmaking, got four consecutive kills with the Rocket Launcher without dying.
Stole a Wraith and used it to kill at least four enemy Wraiths in mission 5 on Heroic or harder.
Completed mission 4 without one preventable Marine death on Heroic or harder.
In matchmaking, effectively camped one location without dying for a full 60 seconds.
In matchmaking, scored three times in one round of Ricochet.
In Castle DLC matchmaking, completed a match in any mode for each Castle map.
In Castle DLC matchmaking, performed 5 melee kills in a single match.
In Castle DLC matchmaking, disabled a vehicle and then hijack it.
Carried a UNSC weapon all the way through mission 3 on Heroic or harder.
In Majestic DLC matchmaking, got the 'Close Call' medal twice during one match.
Completed the Campaign cooperatively on Heroic or harder.
In Majestic DLC matchmaking, called in 3 ordnance drops during the same game.
In Crimson DLC matchmaking, killed a player while airborne from a Man Cannon.
Saved a Film Clip from the Theater.
Uploaded a File to your File Share.
Took out both Hunters using only the Sticky Detonator in mission 7.
Completed 25 Challenges.
Created and saved a Custom Map in Forge.
Completed a Spartan Ops chapter solo on Legendary.
Killed 3 Crawlers in one hit with the Gravity Hammer in mission 8.
Completed any Campaign mission with 3 or more Skulls on Heroic or harder.
Tricked or forced a Hunter to fall to his demise in mission 6.
Completed all chapters in any 5 episodes of Spartan Ops on any difficulty.
Found one of the RvB Easter Eggs in Episodes 1 to 5 of Spartan Ops.
Saved at least one Marine in Chapter 3 of Episode 2 of Spartan Ops on Heroic or harder.
Changed your Spartan's pose in the Spartan ID card.
Saved a Screenshot from the Theater.
Completed any Campaign mission cooperatively on Heroic or harder.
Completed the Campaign solo on Legendary difficulty.
Completed the Campaign on Legendary difficulty.
Completed the Campaign on Heroic or harder.
Got significant air in the Warthog at midnight in mission 2.
Won 20 War Games matchmaking matches.
Ranked up your Spartan-IV to SR-20.
Found all of the Terminals in the Campaign.
Found a Terminal in the Campaign.
Won 5 War Games matchmaking matches.
Completed a Challenge.
Completed all chapters in Spartan Ops Episode 1 on Legendary difficulty.
Assassinated a Knight in any Spartan Ops mission.
Completed a Spartan Ops Mission on any difficulty.
Changed your Spartan's armor in the Spartan Armor card.
Changed your Emblem in the Spartan ID card.
Ranked up your Spartan-IV to SR-5.
Completed the Campaign on Normal or harder.
Completed mission 8 on any difficulty.
Completed mission 7 on any difficulty.
Completed mission 6 on any difficulty.
Completed mission 5 on any difficulty.
Completed mission 4 on any difficulty.
Completed mission 3 on any difficulty.
Completed mission 2 on any difficulty.
Changed your Service Tag in the Spartan ID card.
Completed mission 1 on any difficulty.
Found and accessed Chief's record in mission 1.
In Ch 1, Ep 5 of Spartan Ops survived the enemy assault during the defense on Normal or harder.
Created and saved a Custom Game type in War Games.
In matchmaking, assassinated the ball carrier within five meters of your own goal in Ricochet.
In matchmaking, scored by throwing the ball from 30 meters in Ricochet.
In matchmaking, survived three vehicle explosions in a row with the Survivor package.
In matchmaking, scored a goal in Ricochet while taking damage with the Resistor active.
In matchmaking, recovered full shields from low health with both Resistor and Recharge active.
In Bullseye DLC matchmaking, activated both electrical surge systems during a match on Vertigo.
In Bullseye DLC matchmaking, acquired the Rocket Launcher at the start of a match on Pitfall.
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