It took me the longest time to figure this one out! The trick is to draw the guys off the bridge and onto the hill. Then, take these guys out BEFORE you grab the detonators. You have to beat the clock, never be seen, and meet the accuracy requirement.
The clock starts at 15:00. You have to blow the bridge before 7:00. That means you have 8 minutes to do everything. Here's how you do it.
When the mission starts, switch to knife and run straight and a bit left. Go over the hill and down to the driveway. Head directly for the nearby fence corner where the trucks are parked. There is a tree there and bushes. Dive into the bushes and get out your pistol.
Time approx. 14:10
You are first going take out 4 guards patrolling the lot. When bullets start flying these guys are going to come your way from either around the back of the trucks or along the fence in front of the trucks. Make sure that the tree doesn't block you from aiming at the guy who might come down the fence in front of the trucks. Make sure the bush doesn't block your view.
As you lay there for a second, you'll see a guy patrolling off in the center of the lot behind the trucks diagonally in front of you. Put two shots into him. If you didn't kill him then he comes running. Turn and try to put one round into the guy patrolling way off to your left in front of the garage. You'll probably miss but you need him to come running too. Get ready! There are 4 guys heading your way and that bush doesn't provide much cover!
Quickly check your map computer and see where everybody is. As guards come from behind the trucks, put two square into their chest BEFORE they reach the fence. Otherwise they'll see you laying right there. As guards come along the fence in front of the trucks, turn and drill them BEFORE they reach the corner else they'll see you too. It's a bit nerve racking because you don't know which direction they're coming from and you have to drill them fast before they reach the fence. Be calm. After some practice, you can take all of these guys out quickly.
Now get up and run to the hole in the fence while reloading your pistol. Switch to your knife. Dive through the hole. Run to the button. Don't run along the wall to the button. Run near the truck then walk the last bit up to the button. Use the button. The fence opens.
When the gate opens, step inside and lay flat. Crawl over to the bush by the alarm. This bush is amazing! You can hide in this little bush and blast away with your AR-15 and nobody sees you! Once in the bush, switch to the AR-15 and drill the guy facing you standing in front of the truck beneath the camera. The alarm sounds. Get ready. All hell is going to break loose!
Use short bursts. Don't blast blindly because you'll ruin your accuracy. As each guard approaches, give them a short burst into their chest. One by one they go down. Also, there's a guy who comes running out the door. Turn and blast him in the back. It all happens fast! Pay attention because if a guard gets behind the bush he'll sees you and opens fire!
All the noise makes the guys on the bridge come up the hill to investigate. They all gather on the other side of the wall facing the street.
Use your infrared to quickly check if you've dropped everybody in the yard.
Time approx. 11:20
Get up and search the bodies for grenades. Usually I find one. If you don't then don't worry about it. Toss the grenade at the fuel barrels alongside the wall between the two shipping containers. Or, you can save the grenade and toss it at the fuel barrels when you're ready to unlock the rear-gate. Either way, the explosion helps draw them up the hill to that side of the compound wall.
There is one guy standing at the far right corner of the building. There are a couple of ways to take this guy out. One is to lay down behind the truck and aim underneath the truck and put a short burst into his chest. This is a risky shot because if you miss then he sees you! Or, you can run to the sniper rifle leaning up against the other truck. Grab it and lay flat. Aim and fire! Don't forget to pickup your AR-15.
After this guy goes down, put on your infrared and run to the wall beneath the guy on the inside catwalk. He hears you and stops. Quickly switch to your AR-15 and blast him through the wall. You'll hear him go down. If you don't hear him go down then check to see where he's at. If he's still standing, adjust your aim and take this guy out!
Reload and head for the door underneath the camera. Open the door and quickly step inside and dive to your right. The two guards almost never see me when I step inside.
One guard runs to a corner of the inside fence and stops. Drop him! This causes the second guy to run around crazy. This guy doesn't stop and you must blast him while he is running around. This guy is the toughest guy to drop in the whole mission. If you miss him then he turns and fires! If you spray too many bullets then your accuracy goes down. You can switch to your silenced pistol and use that instead. Take this guy out! Get up and switch to your knife and run to the gate. Open the gate.
Time approx. 10:45
Grab the explosives and exit the backdoor. Don't worry about alarms going off. Run around to the back gate of the compound. Quickly check your map computer to see if there are guards on the other side of the wall near your position. They should be on the other side of the wall facing the street. Occasionally, you'll find a couple of guys back by that gate. If there are guys back there, quietly follow them to the corner. As they move, you move. If a guy stops, quietly pluck him in the head.
If there is nobody back there, run along the hill to the bush on the edge of the hill where you can face directly down the wall where all the guards are. Be careful. There are guards all on the other side of that wall. Dive to the ground and crawl the last bit to the bush.
Time approx. 10:15
Once in the bush, get out the AR-15. Grenade launcher time! Launch grenades into the crowd. You want to take out as many of these guys as possible. If a bunch of guards are all standing together, launch one straight into the crowd! Kaboom!
By the way, taking guys out with grenades increase your accuracy.
Immediately switch to your pistol and take out anybody still standing. Don't start firing blindly. You still have accuracy to keep in mind. Pluck one and when they turn and come your way, put two into their chest. Sometimes I manage to kill all of the guys with the grenades but mostly I have to pluck the guys still standing. Take out everybody on that hill!
Now, check your map computer to see if you've gotten everybody. If you got everybody (except for the guys by the detonators) then head for the detonators. If not, then be patient. Usually there are 2 or 3 guys from the bridge who are still on the bottom of the hill but are thinking about coming up the hill now. Wait for these guys to get to the top of the hill in front of you then drop them one at a time. Or, you can risk sliding down the hill and trying to get the detonators and onto the bridge without them seeing you. But then they see you when you try to leave the bridge after setting the explosives.
Time approx. 9:20
Now, turn and slide down the hill right behind you heading straight for the detonators. Crawl to the detonators. Grab the detonators. There is a guy patrolling back and forth on the other side of the truck behind the detonators. You can take this guy out when he stops with one into his head. Otherwise, you can leave him alone but he might see you when you run alongside the road to the bridge. Usually he doesn't. If you've got time then take him out. It's a risky shot because if you miss he makes a big stink and the guys in the nests turn and blast you. Your choice.
Either way, once you've gotten the detonators, crawl back behind the truck. Crouch-walk behind the truck if you need to move and reload your silenced pistol. Crawl into the bush in front of the truck by the bottom of the hill. Get into position so you can pop the nearest guy in the machine gun nest in the side of the head. He goes down quietly. This causes the guy in the other far nest to turn. Sometimes he turns and crouches. Take solid aim at his head and pop him. Tough shot but you can do it!
Get up and toss your AR-15 and run straight towards the road and when you reach the side of the road, turn and run alongside the road straight to the catwalk on the near side of the bridge.
Time approx. 8:30-9:00
Set the explosives on one side of the bridge. Cross the road at the rear of the bridge and set the explosives on the far side of the bridge. Then, run off the bridge. Head diagonally to your left straight up the hill. I usually head all the way up to a nice flat-spot on the very top of that hill with a beautiful view so I can survey all the bodies I left behind with my infrared goggles. And I get to watch the bridge blow. Mission accomplished!
Time approx: 7:00-7:30
Eventually I completed this mission with 7:33 on the clock, never seen, 100% health and 100% accuracy. Finally got my David Jones rating! Hooray!
Tough mission! Don't give up!