Getting into the ValleyFollow the passage out. Turn right and run down towards the valley. (Alternatively jump into the river and let yourself be taken down the waterfall.) Shoot the wolves before you reach ground level. Opposite the waterfall is a cave mouth. Climb in. Close to the ramp, you will encounter another wolf. Follow the path. In front of you is a snow covered wall. There you can climb up. If you make a short detour to the right, you can shoot three more wolves. Jump up at the snow-covered pillar and grab the ledge. Climb up. At the top, you will find a dead adventurer who has lost a large medipack. Pick it up. Then slide down on the other side to come to the lost valley.
The ValleyWhen you step around the first corner, you will be greeted by a Raptor. Kill it. If necessary climb back onto the rock formation. Run forwards till another Raptor appears. Kill it as well. Run further along, till you notice a broken bridge overhead. Step forwards till you can hear the music. Soon the ground will be shaking and a huge T-Rex appears. Kill it while jumping back and to the sides. Careful it will try to bite your head of. Do not get caught in corners. After he is killed, run further into the valley.
The 1st Machine CogAhead is a double waterfall. Jump into the pool at their foot. Climb out and quickly kill the Raptor. Climb up the blocks and collect the Machine Cog #1. Climb back down. Dive back or follow the passage and climb out.
The 2nd Machine CogRun towards the giant stone arch. Shoot the two raptors running around in the area behind it. In front of you is the ruin of a little temple.
The 3rd Machine CogLeave the temple. On the right is a passage in the rocks. Climb in. Follow the passage, you will find another save
The MachineIt's time to leave the valley. Run back to the other end. On the left side you can climb back up to where the skeleton was. Climb down on the other side and leave the cave again. Climb up on the left of the waterfall. Run to the end. Turn right. You have to jump across the river to get to the other side. Make a running jump to get there. On that platform, turn left and make a running jump to the next platform on the other side. Run up the ramp and make a standing jump to the other side. Follow the platform and make another standing jump up to the column on the other side. Grab the ledge and pull up. Follow the passage. You will come to a wooden bridge. Save your game at the
ExitJump into the water and swim to the left. Climb out on the right side. Pick up the shotgun. Jump back into the water and dive down into the tunnel. Follow the tunnel to the end and dive up the shaft. Climb out.
Bats (encountered in Peru and Greece) are fairly easy to kill. Run around with your guns drawn unless you are climbing, and you should be able to dispose of them quickly. Once they attach to Lara's head, hop back or perform a role to get some distance between you and them.
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Wolves (encountered throughout Peru) are nasty beast if they come to close and you get caught in a corner. Before you get to close, make sure you can not shoot them from atop a rock where they can not reach you. Keep enough distance and while fighting you might want to perform backflips as to not let them get to close. Keep shooting all the while. Often wolves will appear in packs of two or three.
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The Velociraptor is very dangerous. Here you should pick a good weapon. In the area where you meet the raptors first you can find the shotgun. This might prove helpful, but you will also need it against another opponent. Try to shoot raptors from above, while standing on a rock, or keep moving. Try not to get caught in a corner.
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In the area where you meet the raptors for the first time you will also encounter the Tyrannosaurus Rex. He is very aggressive and will try to bite Lara's head off. So stay away from his head. Jump backwards early enough to stay out of its reach. Keep shooting the whole time. It might become necessary to change direction, or you might be forced against the wall. You can also try to stand in a cave entrance and shoot the T-Rex from there, where he cannot reach you.
To read more on the Tyrannosaurus Rex, please visit WikiRaider.