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