Full list of all 43 Brink achievements worth 1,250 gamerscore. It takes around 20-25 hours to unlock all of the achievements in the base game on Xbox 360.
The base game contains 36 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 7 achievements worth 250 Gamerscore.
Collect all Audio Logs
Take down an enemy with a Satchel Charge
Reach Rank 5
Spot a mine which is later defused by another Engineer
Win all storyline campaign missions (exc. What-If missions) in either Online Versus, or in Hard mode
Attempt to Revive an objective-class teammate over a non-objective teammate near a Primary Objective
Complete an Operative Primary Objective within 5 seconds of breaking disguise
Win every Security campaign mission, including What-If missions
Win both story campaigns (not including What-If missions)
Win all main missions of the Security campaign (not including What-If missions)
While on defense, take down an attacker who's completing a Primary Objective
Take down an enemy with a Cortex Bomb
Take down an enemy by shooting a grenade
While on offense, win the match in less than 30% of the time limit
As a Medic, using the Transfer Supplies ability, give the last of your Supplies away
Win every Resistance campaign mission, including What-If missions
Close an enemy team's shortcut
Win all main missions of the Resistance campaign (not including What-If missions)
Complete all 3 Star Challenges
Complete all 1 Star Challenges
Complete your first 3 Star Challenge
Reveal an enemy in disguise
Upgrade your team's Command Post
Disarm an HE charge
Complete your first 1 Star Challenge
Detonate a HE Charge
Open a shortcut for your team
While on defense, prevent the attackers from completing their first objective
Reach Rank 2
Use the last of your Supplies to refill a teammate's ammo rather than your own
Win any mission, whether campaign or What-If
Revive yourself
Take down an enemy with gunfire while knocked down
Take down an enemy with a mine
Capture an enemy Command Post
Complete an objective after first selecting it on the Objective Wheel
Kill an enemy with a Napalm Grenade
Kill an enemy with a UAV
Kill an enemy with a Pyro Mine
Win Founders' Tower as both factions in Campaign Mode
Win Labs as both factions in Campaign Mode
Have a Field Regen Unit buff more than 3 players simultaneously
Reach Level 24