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