They want you to do this mission without being seen, at least 90% health, 85% accuracy, and under 8:00 minutes. Just can't be done! I've done this mission hundreds of times. If I finish under time limit (rarely) then I'm full of bullet holes and have been seen. If I use stealth to sneak in and out then I can't finish under the time limit. If I use diversion to draw the guys on the bridge to the back of the compound by firing a million bullets into the air, then I don't finish with the accuracy.
Plus, it takes WAY TOO MUCH TIME to run all over the place! The mission starts you a half-mile away in the woods. It took me 1:28 just to run from the start-off point to a bush by where the detonators are located! They force you to go out the back door of the garage once you steal the explosives. This forces you to run ALL THE WAY around the building again. If you use the back door on the compound wall to exit then 9 out of 10 times there are guards back there who see you. If you go out the hole in the fence then you have to go ALL THE WAY down to the bridge. Probably 3 to 5 minutes of this 8:00 minute time limit is spent just getting someplace. This MISSION IS STUPID THE WAY THEY SET IT UP! I've done this mission hundreds of times and never once came close to finishing under the accuracy limits.
I've tried this mission by stealing the detonators first THEN getting the explosives but there always seems to be guys on the bridge when I get down there who see me. I've stolen the detonators first and sniped the guys all around the machine gun nest but then I don't finish in time. If I even get down to the bridge in a reasonable amount of time then my accuracy is too low! SIMPLY CANNOT BE DONE UNDER THE CURRENT SET OF CONSTRAINTS! NO DOUBT ABOUT THAT! Simple as that.
You can finish this mission in under 9:00 minutes without being seen (SKIP THE ACCURACY RATING)..
When the mission starts, run straight across the road, up the driveway, and all the way around to the back gate on the compound where the trucks are parked. Lay down in a bush by the gate and fire a quick burst with your Machine Gun to draw the guards in the parking lot to come your way (ruins our accuracy rating). Or you can pluck on guard and wait for the other guards to come your way (eats up your time). Pluck each of the 4 guards in the parking lot square in the chest as they come to investigate. Get up and unlock the gate.
Now.. Stand by the corner of the garage door closest to your position by the gate. Notice that where the concrete wall ends there are wooden planks you can shoot through. If you stand just away from the garage door and aim diagonally through those planks with your machine gun you can kill all the guards which come down there to investigate. You can see their shadows on the ground as they stand by the wall on the other side. Fire quick bursts and reload often. Use your heat-vision goggles to line yourself up properly. Also, I've killed the guards INSIDE the garage when they stand on the other side of the door but since they're running around crazy, you miss ALOT before you drill them (accuracy goes down).
When the mission starts, run to the bushes along the wall by the hole in the fence. Don't use that bush right by the hole! They'll see you there everytime. Lay along the wall behind the second bush and aim along the fence. When the guards pass in your sight, pluck them either in the chest twice or in the back twice.
This DOESN'T draw the guard in the back of the parking lot! Now, you can wait forever for him to come by. Or you can fire a burst from your machine gun to get his attention but this causes guards to swarm around the compound door and you'll never get into the compound without being seen and without being all shot up. Or, you can crawl through the hole in the fence and pluck the last guard in the parking lot from under a truck (but this wastes time and impacts your accuracy). Or, you can ignore him and crouch walk quietly to the control panel and open the gate (which is what I did most of the time but he sometimes sees you if you try to use the hole in the fence to exit!)
When the mission starts, run diagonally to your right and head for the hillside to the left of the machinegun bunkers. Crouch walk the rest of the way and right around to the back of the truck right there at the bottom of the hill. Then crawl over to the detonators and grab them. Crawl back behind the truck and crawl up the hill. You can crouch walk part of the way and run when you get near the hill top. Sometimes they'll see you.
At the top of the hill, you can run around the back to the gate and come in that way.. Or, you can run toward the hole in the fence and come in that way. Or, you can crouch in a bush at the top of the hill overlooking the machinegun nests and fire two grenades to kill the guards in the nests who will see you when you try to get to the bridge. Or, you can lay in a bush at the bottom of the hill and snipe the guards with your silenced pistol. This is good in that it clears that area but doesn't do anything to draw the guards OFF the bridge and you'll never finish in time.
Okay... However you want to START the mission.. here's how you get the explosives.
If you've shot all the guards through the wooden planks then there are only 2 more guards standing in the compound by the camera. Run and open the compound gate go to your right and crouch behind the truck so you can fire a grenade right at the fence and take these last two guards out with the explosion. RUN around the fence and get behind the first truck. Lay down and look underneath it and you'll see a guard standing in the corner by the alley leading to the building's back door. Fire a quick burst at him. Put on your heat-vision goggles and RUN to the building to a position directly under the position of the guard on the cat walk. He stops. Remember his location on the wall and fire a burst into the wall. He goes down.
If you HAVE NOT killed the two guards running around inside the building, open the door and lay flat just outside the door. As the guards each stop in your sites, fire a burst and kill them. This takes time and you'll probably be seen.
Once inside the building, run to the fence gate and fire a burst at the lock and open the gate. Run to the explosives, grab them, and head straight out the door.
Stop and look at your map computer! All the commotion has caused the guards to swarm the area. If there are any by the gate on the back wall of the compound then you can't use that gate and you must go back out the hole in the fence.
LOOK AT YOUR TIME! If your time is showing 9:00 minutes or less then you'll NEVER COMPLETE THE MISSION IN TIME! Might as well start over.
If you've ALREADY grabbed the detonators at the start of the mission, then you can use the hole in the fence to exit, and run across the road and head straight towards the bridge. As you run towards the bridge, use your heat-vision goggles to check if there are still guards in the area. If there are, then you'll be seen. If you hide and wait for them to run up to the compound to join the others, then you're wasting time and won't beat the clock. And this doesn't take into account whether you've already killed the guys in the machinegun nests who will see you when you're on that side of the bridge.
Look.. the constraints the game-developers put on this mission to achieve "David Jones" status isn't just tough.. it's impossible. And of course, people will brag about how they did it but they'll be lying to you. I'm an expert at this game. If there was a way to finish this mission I would've found it. I've done every combination, diversionary tactic, sniping, whatever.. and you just run out of time! Lower the accuracy requirements and I MIGHT FINISH IN TIME. Change the "Never been seen" requirement and I MIGHT FINISH IN TIME. Lower the 100% health and I MIGHT FINISH IN TIME. But to do all three makes it impossible to complete. I've given up.. Can't be done.. Simple as that..
It would've been easier to just tell you how to do the mission and claim I did it.. But, all the other walkthroughs I've written here are true and accurate. How I wrote it is HOW I ACTUALLY DID IT! I'm not going to claim it can be done if you do it my way when in fact I couldn't even do it that way myself. If I stumble upon some 'Repeatable' way of finishing as "David Jones" then I'll post it. Otherwise..