need help on co op mission!! am at the part where you need to get into the ventilation system but cant find where!!

Yeah! im stuck there too, my friend and me tried everything... i dont you can do it! We even tried to fly ourselves at the machine gun. It didnt work, and getting Alarm to level 4 is a bad idea, These guards come and they can kill you in 1 shot!

quote aj styles11

Yeah! im stuck there too, my friend and me tried everything... i dont you can do it! We even tried to fly ourselves at the machine gun. It didnt work, and getting Alarm to level 4 is a bad idea, These guards come and they can kill you in 1 shot!

Took me a bit, just got down near the beggining an a new door has opend

i f this mission is called sabatoge u and ur partner need to use the silent pistol and shut off all lights u can and get perfect headshots and u shut off the machineguns by using l1 with the silent pistol with one person the other runs and diactivates it and hacks it to turn it off took me forever to beat it u don't need to go in a vent
also use l1 on cameras and lazers

the vent is right next to the gun jump on to the wall to the right if you are lookin at the gun

On the first CO-OP level after you defeat the first bad guy, how do you get over the ditch, PLEEEAAASE! My freind only rented it yesterday for a week, we don't have much time!