Wake up β 10 β Campaign Mission Completion
A history of decimation β 10 β Campaign Mission Completion
Dominated β 10 β Campaign Mission Completion
Guerilla tactics β 10 β Campaign Mission Completion
Stirring the pot β 10 β Campaign Mission Completion
All travel is suspended β 10 β Campaign Mission Completion
Behind enemy lines β 10 β Campaign Mission Completion
The setup β¦ β 10 β Campaign Mission Completion
And the knockout punch β 10 β Campaign Mission Completion
Fifth Floor: Tools, Guns, Super Weapons β 10 β Campaign Mission Completion
Sentinel size matters β 10 β Campaign Mission Completion
Last stop, this town β 10 β Campaign Mission Completion
Learn the ropes β 10 β Complete the Basic standalone tutorial
Know the ropes β 10 β Complete the Advanced standalone tutorial
Two heads are better than β 10 β Complete a Campaign mission in Co-op
This war is over β 30 β Complete the Campaign
The hard fight β 40 β Complete the Campaign on Heroic
Surviving the long war β 60 β Complete the Campaign on Legendary
Gold rush β 20 β Earn a gold medal on any mission (except Prologue) on any difficulty
Palmer's Pure Gold β 30 β Earn a gold medal on every mission (except Prologue) on any difficulty
Lone Wolf β 40 β Complete any mission (except The Signal) solo on Legendary with all skulls activated
Comrades in Arms β 20 β Earn a gold medal on any mission (except Prologue) in Co-op on Legendary
A little bit extra β 10 β Complete half of the Campaign bonus objectives
A lot extra β 20 β Complete all the Campaign bonus objectives
Alas, poor Yorick! β 10 β Collect a Skull
Morbid curiosities β 20 β Collect half of the Skulls
Collecting a dream β 30 β Collect all the Skulls
The Scrappy Six β 20 β Complete a matchmade multiplayer match as each of the starting 6 leaders
First steps β 10 β Complete a matchmade multiplayer match
Natural intelligence β 10 β Win a Skirmish Match against only AI opponents (1 or more)
Two heads are better than none β 10 β Win a Skirmish Match with a friend against only AI opponents (2 or more)
You've got a case of the Birley β 20 β In a Skirmish Match against Legendary AI, recycle your base in the first 5 minutes and then win
The rank and file β 10 β Recruit or construct 1 of each UNSC unit in Multiplayer or Skirmish (Launch units only)
The tribe β 10 β Recruit or construct 1 of each Banished unit in Multiplayer or Skirmish (Launch units only)
Trash compactor β 20 β Destroy 100 Vehicles with Anti-Vehicle Units (Multiplayer, Skirmish or Blitz)
Flyswatter β 20 β Destroy 100 Air units with Anti-Air Units (Multiplayer, Skirmish or Blitz)
Meat grinder β 20 β Kill 100 Infantry with Anti-Infantry Units (Multiplayer, Skirmish or Blitz)
Spare change β 10 β Spend 5 Leader Points in Multiplayer or Skirmish
Big spender β 30 β Spend 100 Leader Points in Multiplayer or Skirmish
Space healer β 30 β Cast 100 healing Leader Powers (Multiplayer, Skirmish or Blitz)
Overkill β 30 β Destroy 500 units with Leader Powers (Multiplayer, Skirmish or Blitz)
The hand that feeds β 20 β Secret Achievement
Making the most of the day β 10 β Complete 3 Daily Challenges in one day
A strong showing for the week β 10 β Complete a set of 3 Weekly Challenges
Short-term commitment β 20 β Complete at least 1 Daily Challenge each day for a week
Long-term commitment β 30 β Complete at least 1 Weekly Challenge each week for a Month
Duellist β 10 β Win your first Blitz match
Ante-up β 10 β Complete the Blitz tutorial
Card shark β 20 β Play 25 matches of Blitz
Full house β 10 β Play Blitz as each of the 6 starting leaders
All or nothing β 10 β Play all of the cards in your deck at least once in a single Blitz match
Stacked the chips β 10 β Gather 150 energy crates over any number of matches
Jackpot β 40 β Play 777 total cards over any number of matches
Firefighter β 10 β Beat wave 10 in Blitz Firefight
It just keeps going β 30 β Beat wave 25 in Blitz Firefight
On fire β 20 β Score 500,000 points in a single Blitz Firefight
Paint it red β 10 β Achieve the highest possible kill-streak in any Blitz mode (Blitz or Firefight)