Tomb of Tihocan - Tomb Entrance, Pierre, and the
"On Incredible Tales" Achievement/Trophy

After using the switch in the cave above the lake to open an underwater door, as described in the main walkthrough, locate another switch to open the tomb entrance. Tread water near the right corner of the long ledge in front of the tomb.

Swim down and forward toward the far (west) cavern wall. Look for a pointy, light-colored rock overhanging the opening. Swim underneath it and to the left, into a rough tunnel.

Follow this tunnel upward, then right, into a section lined with manmade stone blocks.

Swim through the gate you opened earlier and surface in a small room with a switch. Use it to open the tomb entrance and prime the centaur statues to animate when Lara approaches. (There's also a save crystal here in NG+.)

NOTE: If the metal door in the flooded passageway is still closed, you missed a switch. Swim back out into the lake and come to the surface. Face away from the tomb entrance, as shown in the screenshot above, and swim through the rocky archway ahead on the left. Climb out of the water on the square gray ledge. Then follow the main walkthrough beginning with the SUBTERRANEAN LAKE.

Once you've opened the tomb entrance, swim back to the lake and climb out on the right side of the long ledge in front of the tomb (i.e., right when facing the entrance and the two statues). If you're going for achievements/trophies, save the game. You'll need to play through the next section twice to unlock different ones.

For the "On Incredible Tales" achievement/trophy, you must avoid killing the 2 centaurs that animate as you explore this area. Run directly into the building as the Atlantean centaur (15) on the left comes to life and begins to hurl fireballs. Once Lara is safely inside, it can't hurt her. (The one on the right doesn't animate yet.)

Now prepare for the final showdown with Pierre DuPont (16). As you move past the red pillars, he appears on the far side of this large room.

This time, you can use the magnums or shotgun to take him down fairly quickly. Or, if you'd rather use pistols, run forward, get a lock on him, and keep firing as you backflip away. Then flip from side to side while firing continuously. As long as Lara keeps moving, most of Pierre's shots will miss. Or, run/jump straight past him, roll, and shoot at his back until he turns around. Repeat until he falls.

The achievement/trophy "Not So Late for the Prize Giving!" should pop when you defeat him. Relieve the corpse of a SECOND GOLD KEY (21), the SECOND PIECE OF THE SCION (22), which he apparently took from the pedestal at the center of the room, and his MAGNUMS (23), or magnum ammo if you already have the guns.

In the Steam version of the game, you do not have to animate the second centaur (17) in order to unlock "On Incredible Tales." But if you want to be absolutely sure, return to the tomb entrance and run past the doorway. (No need to go outside.)

You should hear a crack, and a second boss health bar should appear, as the other statue comes to life. Quickly move away from the door and out of danger.

If you plan to replay this section for all kills and pickups, there's no need to collect the remaining items. Just climb up to the keyhole on the north wall of the main room. Use Pierre's GOLD KEY to unlock the exit, below on the opposite wall.

Drop down and go through. After a pair of cutscenes, you should unlock the "On Incredible Tales" achievement/trophy, along with "Look Over Us Kindly, Tihocan," for completing the Greece chapter.

Now reload the save you made outside the tomb, and we'll do that again with all kills and pickups.

[Tomb of Tihocan Walkthrough]