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~ Borneo. The start of the five-part Co-op Adventure story. It begins with Nathan Drake, his mentor Victor Sullivan, and old flame Chloe Frazier investigating the jungles of Borneo for the possibility of treasure. Unfortunately, they stumble across soldiers under Zoran Lazarevich's command who appear to be searching for 4 tablets which, when joined together, show the location of a possibly priceless artifact. Stranded without guns, the trio must face Lazarevich's lieutenant Draza and his henchman to take back the tablets and discover their secret. ~
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Spoiler:Guide
First Part: OVERVIEW: this first area has two parts - a cramped semi-circle area with logs for cover, and after a short narrow path, a large but diverse area with many fallen logs and a few crates. In this place you'll find the first crate containing a tablet. After opening it, you'll automatically advance to the next area.
You begin without guns, and with two standard soldiers facing away from you. Stealth them and take their pistols, but make sure you escape or throwback the grenades, because their close proximity can potentially kill you. There are a couple of heavies with sawn-off shotguns here that will come towards you, so hang back and focus on their helmets. Try not close combat here, as revenge can be a pain in this cramped area. There's a pistole which could be helpful for quickly taking out the guards loitering in the larger area.
After wiping out all the soldiers, a story circle will appear at the crate, which will trigger a short cutscene where the characters state they can bludgeon the crate open. One person can now interact with the crate, which will cause the character to slowly open it by ramming their rifle into the lock. Doing so triggers a wave of enemies, so that person should stop immediately as they are left completely vulnerable. Your best option is to go back to where you began as soldiers, primarily heavies, drop down from the bridge above the crate and the narrow path, so you'd be attacked from both sides if you stay there. Hang back and wipe out all the enemies, as well as campers on the bridge. Next open the crate to enter the next part.
Second Part: OVERVIEW: You start on the bridge above the crate. Following it leads to a small 'island' of sorts, from which another bridges extends from. This bridge leads to a high area with many ledges, with a campsite in the middle, with a wooden gate just beyond it.
On the island there are a few riot shielders and a couple of standard soldiers, so lob a grenade at em'. On the bridge leading to the hilly area there's a heavie, and at the end another one and a few standard units. Wipe them out, but watch your rear as some soldiers climb up the ladder from before. Move on to the hilly area. A Hammer Zorskel (more armor!) drops onto a small ledge surveying the place, as well as a mix of normal soldiers and heavies, mainly with shotguns, will come out of hiding. Go back to the island to stay out of his range, because movement is tricky in that area. Focus on the other soldiers for now, and keep an eye out for a couple of armored chokers. Ammo will likely fade very quickly, so don't go crazy. After making sure it's just you and Zorskel, go across the bridge and focus your fire on him, but spread out a bit. There's a Wes .44 on a log to the left which can help. The next part will begin after they boost each other up to the top of the gate.
Third Part: OVERVIEW: You begin in an open area with a couple of stations with benches, crates and guns. Beyond them are lines of crates for cover and an elevated walkway with a few large trees nearby. Further own there's more crates and a cliff. The tablet crate is right near the walkway.
Take cover at the first station and take out the enemies at the second one, then move on if you wish, but keep your eyes open. A carpet bomb heavie will appear on the walkway along with heavies and standard soldiers, and snipers on the cliff. The carpet bomb guy isn't too bad, especially with the dragon snipers around the place, and a Wes through a narrow tunnel to the right of the second station in which enemies spawn. After taking out all enemies, start whacking the lock. Stop doing so when soldiers start spawning, mostly from the cliff area. This bit is pretty easy, but they spawn all over the place so find some good cover. When you finish them off, a story circle will appear to the left of the cliff face, and you'll be boosted up to the next part.
Fourth Part: OVERVIEW: You wind up in a large camp area full of tents, and a narrow pathway to your right. Beyond the pathway is a three level area; the path circles around to the opposite side, below the path is a circular watery place with a single generator for cover, and at the start of the path you can climb up some handholds to a higher point.
There's a Tau right before the first tent on the right, which may be helpful for quickly taking down the heavies to come. Once you walk along the path, a few standard soldiers appear on the other side, as well as a Hammer heavie. Your best option here to to hang back in the tent area to avoid the explosions and take them out from afar, although having someone go halfway along the path and attack the soldiers spawning from there isn't a bad idea. Once they are killed, go to where the Hammer guy was and continue forwards. As always, grabbing the Hammer can greatly help with the next bit. A few soldiers, two normal and one heavie choker will leap at you, but it isn't a problem. Head to the circle at the end of the area to enter the final part.
Fifth Part: OVERVIEW: After a short cutscene, you're now behind a log surveying the area. There's another log just beyond it which Sully mentions is a good spot for covering fire. Below is a somewhat flooded area with elevated walkways, with a few scattered structures and a station at the far side. To the right of the covering spot there's another one with sandbags, and beyond from that a narrow path leading to a dead end. To the left of the covering spot there's a higher point which I think is inaccessible, and a short jungle passage on the ground level. Right next to the narrow path beyond the sandbags is a tower which can be climbed into via a ladder down below. There are 2 crates here, first at the station, and second near the tower.
It's a good idea for someone to stealth the soldier and take the covering spot, but not essential. The other two, at least, should hop down, stealth then hang back and take out the heavies. Some soldiers also come from the right side of the area, so don't go to far ahead. Some armored chokers will appear up top, so try to keep near each other in case someone gets caught. After taking out the soldiers before the station, continue on, but watch out for a riot shielder behind the structure next to the crate, and the heavies in the station. The jungle passageway to helpful here. Once all enemies are defeated, everyone head over to the crate and start opening it.
Once someone begins whacking it, soldiers, mostly standard ones, will stream in from windows on opposite sides of the station. Someone should stay inside there and focus on them, while the other should protect the person opening the crate from soldiers on the walkways. Some heavies will appear from the hut soon, so head back and keep an eye out. Don't go for the crate until all enemies are defeated, because things can get bad quickly here. Once doing that, open the crate.
Run from the station as heavies appear, but don't go into the open as a Hammer guy appear on the cliff along with some other soldiers. Going back to where you begun is your best bet, and climbing up to the covering points will allow you to get a clear shot on everyone, but again, don't stray from your teammates too much. Once you defeat all enemies, open the crate.
Lieutenant Draza (Sniper boss) along with some heavies will appear at the station, including a carpet bomber, so your best strategy to to vault up to the higher points, but watch out for chokers and snipers on either side. Climbing to the top of the tower is an excellent idea, it keeps you safe and there's a Dragon and G-mal up there, but you'll find you run out of ammo quite fast, and it distances you from teammates, so use at your own risk. Focus on the heavies before Draza, then take down Lazarevich's right-hand-man by focusing on his head. The T-bolt kickback is especially helpful here, as well as team-based ones, like Army of Three and Team Medic. Once he and all the others go down, proceed to the story circle and you're done! Congratulations if you succeeded. If not, keep trying. Crushing only gets easier as you learn the layout and weapon locations.
~ The three treasure hunters connect the tablets, which shows a bust of Juno, an ancient god. Nate says that the statue is priceless, but he doesn't know where to find it. Sully states they should head to the underground Secret Library in London to consult an old book showing the exact location. ~ 
