Lara starts this new section of her quest standing on a dirt road between high fences. Follow the road to the gate with the large 'Do Not Enter Signs'. As you approach, two blue clothed baddies emerge from the rocks on the right side of the road. after you've killed them, pick up the silver key that one of them drops and use it to open the small door on the right.

There are two more enemies inside and some shotgun shells in an alcove in the far left corner. A small medikit nestles under the opposite wall to the shells. Jump over to either of the two levers in the corners of this area, taking care not to fall into the deep pits. After you use both levers, a door in the far corner opens and one of Von Croy's henchmen enters. Kill him and then go through the door you just opened.

Approach the pit on the right. Slide down the slope onto the ledge inside the pit and then jump to the ledge ahead on the left. Turn slightly right and take a running jump to grab the flat spot on the far rim and haul up. Continue forward to the next pit, noting the closed wooden door on the right.

From the edge of the second pit, take a standing jump down to the ledge with the large medikit. When you land, another guy in blue robes appears on the far rim of the pit. Kill him and then take a running jump from the ledge to the next one below where the last bad guy was standing. Climb out of the pit and kick open the nearby grey door (using [action]) and go through.

One of the crates near the door contains Uzi clips. The others are empty. Push the metal cabinet on the far right out of the way and shoot the grate out with your pistols. Crawl through the crawlspace and shoot out the second grating to arrive in a new room with a bad guy standing nearby. Kill him.

Pick up a metal blade lying in the middle of the floor and some shotgun shells nearby. Move the metal cabinet on the left twice and then move the second shelf unit out from the corner to reveal Secret #1 - shotgun shells. Push the button to open the door and take out the two bad guys waiting for you outside.

Now head to the left. At the first pit, take a running jump back to the ledge on the right, a standing jump to the next ledge and another standing jump out of the pit. You're now back at the door in the wall surrounding the area with the ledges and levers. Continue on to the next pit. Slide or jump down onto the ledge on the left wall of the pit. Take a running jump to the ledge ahead on the same side and then take a diagonal jump to a ledge in the opposite corner of the pit, from where you can jump out.

To your left you can see the 'Do Not enter' doors. Go to the right and around the corner, which is actually the left paw of the Sphinx (look up for a good view of the famous monument). Go between the paws and approach the white stone for a cut scene in which Lara translates an inscription...

Walk around the right hand front paw of the sphinx towards the next pit. Slide down the slope on the right to the oddly shaped ledge below. Beyond the pit lurk two more assassins. You can take them out from the ledge you're standing on if you use a telescopic sighted weapon, like the crossbow. Then either take a mildly tricky running jump along the right hand side of the pit to the next ledge, or jump across the pit to a ledge on the opposite side and back across the pit to the ledge on the right. From here Lara can easily climb out of the pit.

To the left of the door ahead you'll find either a wooden handle (if you were using explosive ammo on the assassins) or a cate containing the wooden handle. Pick it up and then climb onto the square block near the sphinx's paw. Take a standing jump onto the paw and walk to the end to get some shotgun shells.