Reach your first rank.
Reach the rank of Sergeant.
Advance a Commendation to a Gold state.
Score 50,000 points in a Firefight game.
Score 25,000 points in an Floods game.
Earn a Triple Kill with one shot of the Spartan Laser in a Red vs Blue game.
Earn a Double Kill with the Shotgun in a Red vs Blue game.
Earn a Killing Spree medal in a Red vs Blue game.
Earn 3 stars on any mission.
Complete every mission on any difficulty.
Earn 3 stars on every mission.
Reach the rank of 5-Star General.
Reach the rank of Major.
Reach the rank of General.
Complete all of the Daily Challenges in a given day.
Upgrade any Weapon for the first time in the armory.
Fully upgrade any Weapon in the armory.
Buy a Skin for any weapon in the shop.
Buy an Emblem in the shop for the first time.
Get an Invincible medal in any game mode (100 kills without dying).
