Brink Cheats

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)
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
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 can place another mine now (10): Take down an enemy with a mine
You shall not pass! (20): While on defense, prevent the attackers from completing their first objective
You're going places, kid! (20): Reach Rank 2
You've escaped the Ark (75): Win all main missions of the Resistance campaign (not including What-If missions)
You've saved the Ark (75): Win all main missions of the Security campaign (not including What-If missions)

Brink: Agents of Change Achievements
A burning Thing (20): Kill an enemy with a Napalm Grenade
Ark King (60): Reach Level 24
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
Towering Achievement (50): Win Founders' Tower as both factions in Campaign Mode