The story has just begun
Win both story campaigns (not including What-If missions)
100 ✓ May 15th, 2011
You've saved the Ark
Win all main missions of the Security campaign (not including What-If missions)
75 ✓ May 15th, 2011
You've escaped the Ark
Win all main missions of the Resistance campaign (not including What-If missions)
75 ✓ May 15th, 2011
Who's bad?
Complete all 1 Star Challenges
25 ✓ May 14th, 2011
You're going places, kid!
Reach Rank 2
20 ✓ May 13th, 2011
The start of something big
Win any mission, whether campaign or What-If
20 ✓ May 13th, 2011
You shall not pass!
While on defense, prevent the attackers from completing their first objective
20 ✓ May 15th, 2011
Use the wheel, earn more XP
Complete an objective after first selecting it on the Objective Wheel
10 ✓ May 13th, 2011
I think I know a shortcut
Open a shortcut for your team
10 ✓ May 15th, 2011
Cut 'em off at the pass
Close an enemy team's shortcut
10 ✓ May 17th, 2011
Oh I'm sorry, was that yours?
Capture an enemy Command Post
10 ✓ May 13th, 2011
That's how you win a match
While on defense, take down an attacker who's completing a Primary Objective
10 ✓ May 15th, 2011
Not over till the fat lady sings
Take down an enemy with gunfire while knocked down
10 ✓ May 13th, 2011
Not so sneaky now, are you?
Reveal an enemy in disguise
10 ✓ May 14th, 2011
Was it the red or the blue wire?
Disarm an HE charge
10 ✓ May 13th, 2011
You can place another mine now
Take down an enemy with a mine
10 ✓ May 13th, 2011
Pump up the volume!
Upgrade your team's Command Post
10 ✓ May 15th, 2011
Boom!
Detonate a HE Charge
10 ✓ May 14th, 2011
Well done!
Complete your first 1 Star Challenge
10 ✓ May 14th, 2011
I live… again!
Revive yourself
5 ✓ May 13th, 2011
No I insist, you take it
Use the last of your Supplies to refill a teammate's ammo rather than your own
5 ✓ May 14th, 2011
Time to start a new character
Reach Rank 5
100 
King of the world!
Complete all 3 Star Challenges
100 
Tough as nails
Win all storyline campaign missions (exc. What-If missions) in either Online Versus, or in Hard mode
80 
Ark King
Reach Level 24
60 
Science Maven
Win Labs as both factions in Campaign Mode
50 
Towering Achievement
Win Founders' Tower as both factions in Campaign Mode
50 
Viva la revolution!
Win every Resistance campaign mission, including What-If missions
50 
To serve and protect
Win every Security campaign mission, including What-If missions
50 
Well that was educational
Collect all Audio Logs
50 
Mutual Support
Have a Field Regen Unit buff more than 3 players simultaneously
30 
A burning Thing
Kill an enemy with a Napalm Grenade
20 
Pyromancer
Kill an enemy with a Pyro Mine
20 
Remote Control
Kill an enemy with a UAV
20 
They never knew what hit them
While on offense, win the match in less than 30% of the time limit
20 
Very well done indeed!
Complete your first 3 Star Challenge
20 
Great shot kid! One in a million
Take down an enemy by shooting a grenade
10 
Smart decisions win battles
Attempt to Revive an objective-class teammate over a non-objective teammate near a Primary Objective
10 
T'is better to give than receive
As a Medic, using the Transfer Supplies ability, give the last of your Supplies away
10 
That mine you found? Disarmed!
Spot a mine which is later defused by another Engineer
10 
Brinksmanship
Complete an Operative Primary Objective within 5 seconds of breaking disguise
10 
It's a trap!
Take down an enemy with a Satchel Charge
10 
A bit of a headache
Take down an enemy with a Cortex Bomb
5