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