Taur Demigod

Drive down towards the building and run over the Soldier standing on the right. Now take out the revolver combined with the lasersight and shoot another Soldier on the roof on your right. Park the motorbike facing to the right. Enter the building. Note that you can climb up on both sides. Step into the second part of the chamber. Run into the corner on the left and collect the Grenadegun. Step back out. Now collect the small medipack on the right. Cross the room and step out on the other side. Turn left and run around the corner. There you'll meet a creature with a hammer. He hits the ground, causing earthquakes. Lara will lose energy if he's too close. On the right is a wheel, which will open the gate on the wall behind. There is a ladder in this chamber but you can't climb up as long as the hammer-man is still around, unless you climb up while your feet are dangling. To achieve that you have to climb on the side of the ladder, not in the middle.

Trap

Run back towards the building and enter. Run towards the door where you entered. Stay inside and climb onto the pillar on the left. This building seems to be resistant to earthquakes. Turn around and make a running jump towards the platform above the archway. Step forward and to the left. Make a running jump towards the crevice and hold on to it. Shimmy right. At the end, climb up onto the platform. Turn right and jump towards the ladder. Climb around the pillar. (Lara won't make it around the second corner if her feet are dangling.) Follow the platform to the left. Climb up at the end. Follow the path out onto the roof. There is a lever. Use it. The doors of the chambers will close and the hammer man is trapped.

Way to the Citadel Gate

Now you have to be quick because the doors are timed. Turn around and make a running jump towards the platform on the right wall. Step onto the platform standing out and jump towards the rope. Turn right and swing over to the higher platform there. Jump over. Quickly shoot the guard and pick up the large medipack. Drop through the hole and return to the motorbike quickly. Drive it along towards the pit and over the ramp on the left. On the other side, turn left and run over the giant beetle. You can't drive any further so get down and run ahead to where you've met the creature with the hammer. Use the wheel about three times. Jump over it and enter the passage. Quickly climb up the ladder. Follow the passage.