Before starting this mission, you will be able to choose secondary weapon. You should choose something with heavy firepower against land enemies and ignore sharks, which are swimming around the boat.
Swim to the rock, which is protruding from the water and go out of the water. Start climbing on the vertical wall. Thanks to the small rocks, Lara will have no problem with climbing on the top and next on the left.
Move around the rock and go maximally to the left. Then, jump back. Lara will clutch wide ledge on the other side. Pull up and stand on it. Now move along the wall to the right and jump on the other side.
In the cave you will find hordes of worms. The best way to eliminate them is trampling (E). You can also kill them with your pistols. The cave is also quite dark, so you should use the flashlight (F). When you climb up, you will reach the place with fissure. In the center of it, you will find the bar, which is protruding from the wall. Start sliding near the left side and in appropriate moment jump in the direction of the bar. Lara should clutch it. Start swinging yourself and jump straightforward. Then move right and clutch the ledge under you. After that continue moving.
Kill the worms on the other side and jump left. Then go up, in the direction of the higher ledge.
Pull up and stand on the wide ledge. Jump on the other side and clutch the ledge above you.
A short way from there, you will find the hole. To pass over it, you will need the line with hook. Shoot the hook in direction of the circle mounting on the top beam and jump on the other side.
When you pass under the rocks (Ctrl), you will stand in front of a big building. You will have to use it to climb on the top.
Approach to the left side of the building. You have to learn how to recoil from wall to wall, exactly in the same way as showed on the picture. You have to jump on the right wall and in the appropriate moment, push button (Space) with certain direction button. After second jump, Lara will clutch the edge of the column. Begin moving left by jumping from column to column. On the last column, jump to the edge above and begin move in opposite direction.
Jump back to clutch the edge located along the facade of the building. Move yourself right to the end and jump to another column. Go around it and jump on the edge above you.
Jump on the left side of the entry and then up. You will stand in front of the main part of the temple. Run in its direction.