Brink
43 Achievements
1,250
20-25h
Cut 'em off at the pass
Close an enemy team's shortcut
10
How to unlock the Cut 'em off at the pass achievement in Brink - Definitive Guide
A really easy level to get this is on the Resistance mission What-If: Operation Babel. As an engineer, do either of the secondary objectives "Construct Main Barricade" and "Construct Side Barricade". If you keep dying, set up a private freeplay game with no bots on the map "Shipyard". You can now create it without trouble. If you start as resistance, change teams via in game menu.
I first earned this trophy while playing the Resistance story line. Day 7: Attack of the City. You will need to be an engineer, but first the opposing team will need to create a short cut of some kind. Once that has been done, you will need to build it back up to close enemies shortcut. Most of the time, it's the Secondary Guard mission that will need to be broken down by the opposing team before you are able to close or fix the problem.
Alternative Method:
This can be done on the Resistance's first What-If? Story mission, and it's very easy. During this mission you have to protect a crane, and there are 2 barricades setup on the side and front of it, just repair one barricade and the trophy is yours, You will need to be an engineer. Thanks CorpusDelecti. Thanks PowerPyx for making the video!