Explore the Tomb's Passages

Now head into the passage. When you reach the barricade, a swinging spear trap comes loose, but does not hit you. Lara gains +10 XP. Take note of the pressure pad on the ground you stepped upon. These can usually be avoided, but Lara would not jump at this particular spot. You may want to keep that in mind for later. However triggering and disabling traps gains you XP. Draw your guns (LT) and aim at the wooden connection (a structural weakpoint) of the trap. Shoot it (RT) to clear the path. Step through. Follow the passage and you reach a part with collapsing floor. You will be sent down, into the water. If you look up, you can see a dangling wooden platform attached to the roof. Shoot the wooden connection to send the board down into the water. Now wade over to the left where there is water coming through the cracks in the wall. Use the axe to widen the opening and let more water in. The water level rises. (If you've forgot to shoot down the wooden platform, swim to the back of the chamber and climb out onto the block there, to shoot it now.) Swim to the wooden board and use it to climb up into the passage above. Lara gets +100 XP. Follow the passage and slide down the chute. After a few steps in this new passage, Lara's foot is caught in a Foot Trap and another Swinging Spear Trap threatens her. Shoot the spear trap and gain +10 XP. Now the water level is rising, so use the axe to pry the foot loose. (Press X repeatedly.) Dive ahead to escape the tunnel. (Press B repeatedly.) Surface at the end and get +50 XP for your troubles. Up, up, up the stairs we go. You will reach the tomb's inner sanctum and get another +50 XP.

Navigate to the Top of the Main Tomb Chamber

Now that's done get down towards the water and find the damaged wall on the right hand side. Use the axe to pry a larger hole and raise the water level. Swim over to the other side (left) and climb out onto the platform there (approximately in the middle). Climb up the ledges here. At the top traverse right and pull up onto the ledge. Jump towards the dangling wooden platform. Lara's weight will lower it and the attached mechanism will raise the wooden door up to Lara's left. More water streams through and the water level rises yet again. She gets another +100 XP, just as the platform breaks and sends Lara back into the water. Climb up onto the small pillar right underneath the entrance to the level below the dome. From there jump up to the entrance and climb in. Alternatively you can climb up on the side facing the large water pool, to enter the building, like I've mentioned above for those who want to skip the goodies. Run across the loose-looking floor tiles. Careful, underneath is a Spike Trap. Quickly jump off. Once fast travel becomes available and you use it to return to Syria, you will find the base camp Syrian Tomb in the corner here. Now step towards the opening and jump onto the large pillar. Jump on, to the next pillar and pull onto it. Jump to the next platform with the entrance. Inside you will first encounter a Spike Trap, but you can easily jump across the crumbling floor tiles. Behind the spike trap you can spot a strangely marked floor tile, this is a pressure pad that will trigger another swinging spear trap. You can simply jump across it, or if you like to get the XP, stand back a little and shoot at the pressure plate to trigger the trap. This might not always work. You will get +10 XP and can now safely dismantle the trap. Follow the passage to the end and up the stairs. Now shoot down the dangling wooden board (not the platform you'd be able to stand on) to drop it into the water, where it will now float. Then jump onto the wooden platform and quickly get over to the other side, before the water rushing in pushes you off. Turn right and find the damaged wall where you use the axe to raise the water level. Now jump onto the wooden platform again and wait for it to sink down. The large wooden gate opens and water rushes in. Lara is pushed off the platform. Quickly swim with the stream, as the floating board is also transported along and can for a short time be used as a stepping stone. Use it to jump to the white ledge on the right side. Climb up the ledges and traverse to the right. Jump to the next pillar and pull up onto it. From here jump onto the wooden beam at the top of the dangling platform that raises the gate. You gain +100 XP and Lara is carried over the fence, back into the area with the dome where the water level is now significantly higher. She will grab a ledge. Climb up and you once again get +100 XP.

Escape the Tomb Alive

After the cutscene you are rewarded +50 XP. Then use your gun to quickly kill the two Trinity Soldiers. Headshots are most rewarding in this case, they'll get you 20XP each. Run towards where the two baddies were and jump across the gap. Follow the passage and don't mind the solider ahead, he is killed by falling debris. Since the path is blocked, turn left. If you like, you can shoot the Solider escaping up a rope, but it is risky, as you should concentrate on running. Jump towards the horizontal bar and swing to the other side. Quickly grab the ledge before you slip. Pull up and continue running towards the right. The floor collapses and Lara slides down. Run to the right and jump across the gap. Head up the sloped column and scramble up the wall to reach the next one. It will tip over while Lara is hanging from its ledge. Pull up and continue running across the platforms. Climb onto the next pillar. From here jump towards the entrance and pull up. Continue running. At the end jump when you reach the hole that has just been torn into the floor.