Marathon
Score 1,000,000 points
35 
All Rewards Unlocked
Unlock all rewards
30 
Slayer
Get 100 kills in Xbox LIVE ranked match
20 
BlackOp Campaign Completed
Complete all challenges in the BlackOp Campaign
20 
Bishop Campaign Completed
Complete all challenges in the Bishop Campaign
20 
Guardian Campaign Completed
Complete all challenges in the Guardian Campaign
20 
ArenaMaster
Perform 5 kills without being killed in a ranked match
20 
Challenges Master
Win Death Match without being killed in a challenge
10 
Ability Master
Perform 10 frags in a row with only your abilities in challenge mode
10 
Tutorials Completed
Complete the tutorial for each character
5 
First Blood
Try to be the first one that kills an enemy in challenge mode
5 
Ability First Kill
perform a kill using your ability for the first time in challenge mode
5