1. Entrance to the cave, Cooperative Concentrate Mode, the secret.
2. The first part of the cave.
3. The way on the higher ledge, different roles for both brothers.
4. A clash with another opponents, explosive barrel.
5. The last wave of enemies, the second part of the cave.
6. Way out and the secret.
In order to reach the second part of the cave you have to climb a ledge . There is a few ways how to do this, Thomas can use the lasso, Ray can make use of Thomas' help and both brothers can use smalls steps on the left side.
During the way to the second part of the cave , a few enemies will attack you. Also, you will encounter there a barrel . Blow it up in order to kill your opponents very quickly and easily.
Right before the exit , you will come across last survivors. Dispatch them and go outside [secret].
Further way will leads you, of course, through another footbridges and steps down the mountain. Do not waste time and on we go.
In that way you will reach another division for roles. As a result you will be able to enter a lift. Make use of it.
Being inside that lift don't even think that you are safe. After a few seconds you will be under attack [!]. This time your opponents will be very claver and they will start throwing in your direction explosive barrels. Your task will be blowing them up before reaching you. Middle difficult level will give you a chance to miss only one barrel. The second one will cause your death. The best way to eliminate this danger is to place the sight in that place which every barrel will cut across. In that way you will blow up every container without aiming.
After finishing the action with powder another threat will cover you. This time opponents will start shooting towards your direction. They will appear on the scaffolding on your left [right screen).
Kill them all and leave the lift [secret]. Then go towards additional opponents (be careful because one of them will be carrying a heavy machine gun and you can die very quickly). You will get a chance to eliminate some enemies which will be one the ground, among the buildings.
Further way will take through a short part of rocky path in order to...
... reach the first building on the ground. Next to the entrance you will be forced to trigger Cooperative Concentrate Mode. During slow-mo shooting you will come across with many opponents. If you are not skillful enough, you won't kill all of them during bullet-time.
When all of them die mount a horse. Then, set off very quickly because from nearby mountains snipers will try to shoot you down. You won't be able to hit them so that is why just run away and finish this chapter.