Tomb Raider: The last Revelation
Cairo
LEVEL 22: CHAMBERS OF TULUN (first time)
You enter this level for the first time from the CITY OF THE DEAD level.
STREET OUTSIDE CHAMBERS OF TULUN: Turn left and ride down the hill to the street below. At the base of the hill, turn right and run over a soldier. There's a sniper on the balcony ahead. You can circle back to the other end of the street to get out of range, or continue toward him, parking the bike just to the left of the wall with the balcony. (Be careful not to go too far to the left, though. There's a deep pit a bit farther on.) Dismount and take him out using the revolver and laser sight (or use the crossbow or pistols with the laser sight bug, described in the COASTAL RUINS walkthrough.
INSIDE THE CHAMBERS OF TULUN: Return to the "T" in the road near where you began the level. Enter the building on the right. Go under the arch into the main room. The first alcove on the left contains the GRENADE LAUNCHER (or 10 grenades if you already have the weapon), and there's a small med-pack in the far right alcove.
Return to the entrance and climb onto the block on the left. Turn around and take a running jump to grab the ledge above the archway leading into the main room. Pull up and cross the ledge to the far right. Take another running jump to grab the horizontal crevice in the right (west) wall. Traverse to the right until you can pull up. Take a standing jump to grab the ladder-like surface on the column to the right. Wait for Lara to pull her legs up onto the ladder, then climb around the column to the other side and drop onto the ledge. Follow the hallway to an opening in the ceiling, where you can climb up to the next level. The hallway there leads back out to the upper level of the main room.
There's a lever on the left that opens and closes the front and rear doors of the building. If you follow this walkthrough, you shouldn't need it. Just leave it alone. The rope is too far to reach from the ledge with the lever, so make your way over to the jutting ledge on the right (west). From here, you can take a running jump to grab the rope. Slide to the bottom of the rope and turn a little to the right to line up a swing to the ledge ahead (on the east wall). Swing and jump to the ledge. Kill the 2 giant beetles. One flies up from below and another lurks inside to the left. This is secret #1 (56/70), which includes a large med-pack and wideshot shells (near where the second beetle was).
Take a diagonal running jump to the ledge below on the left (where you came through from the entrance earlier). It's too far to reach the upper ledge, so you'll have to make your way up to the rope again the long way. Use the rope to swing and jump to the high ledge on the south wall (above the entrance). Kill the soldier lurking inside on the right. Get the revolver ammo he drops, then slide down the ramp to the street near where you entered the building.
Now make your way to the other (north) side of the CHAMBERS. You can go through the building and out the back door, but I recommend taking the motorcycle, since you'll need it later on and this will save you some walking. Drive to the left (east) end of the street and jump across the deep pit on the left side. Make sure to take a long run-up, since you don't have that nitro boost yet. Drive on to where the road drops off near the back door of the CHAMBERS and dismount.
AREA BEHIND (NORTH AND WEST OF) CHAMBERS: The road to the north under the archway leads to the TRENCHES level. You're not quite ready to go there yet. In the far right (northeast) corner of the street, you'll see BROKEN STAIRS leading up to an opening with a sloped edge. Later, after you get the NITROUS OXIDE FEEDER, you'll be able to jump the motorcycle up here. There's also a square opening in the north wall with a ladder leading down. You can also skip this area for now, since you'll be back later.
On the north wall above the archway (opposite the back door of the CHAMBERS) is a ledge. Pull up and follow the ramp to a crawlspace. Continue on hands and knees to secret #2 (57/70), a small room with flares, poison arrows, revolver ammo and a large med-pack. Exit the way you came.
Continue along the street to the right (west). When you round the corner, you'll meet an armored Minotaur with a huge hammer that sends out shock waves when he pounds it on the ground. Oh, and did I mention he's invulnerable to your weapons? On the right side of the road, near where he's standing, there's a wheel which opens a nearby wooden gate.
(NOTE: In my original walkthrough for this level, I had suggested luring the Minotaur into the CHAMBERS and using the lever to close the doors, trapping him inside. Doing this buys you a few moments to run and turn the wheel to open the exit to the CITADEL GATE level. However, I have found that this takes a lot more effort than it's worth. It will save you a few med-packs, though. So if you're very low on health, you can try this instead of the method suggested above. See the notes on how to do this at the end of this document.)
Run over to the wheel, stand facing it edge-on and turn it until you see the wooden gate raise. As you do this, the Minotaur will be banging on the ground, so pop med-packs as needed. Once the door is open, jump over the wheel, run through and let the door close behind you. Whew!
EXIT TO CITADEL GATE: Climb the ladder to the next level, CITADEL GATE. If you have trouble climbing the ladder because of the Minotaur's percussive hammering, try grabbing the ladder at either side, so only Lara's hands catch hold and her feet dangle free. Climb up that way and you should make it.