The 13th Floor - Large Room with Catwalks and Armored Soldier
After obtaining secret #2 in the exploding ducts, as shown in the previous section, follow the crawlspace to a LARGE ROOM WITH CATWALKS and step out onto the walkway. Lara immediately notices the armored soldier below.
Voiceover: Zip chimes in over the headset, advising Lara to be especially wary of the "hulk" in the armored suit below. Again, he draws her attention to the suit's open faceplate.
Continue across the catwalk. (You can run here without attracting attention but don't shoot.) Enter a hall with overhead pipes. Go into the DARK STOREROOM on the right and take a small medipack and a CLOTH (17-18) (190-191/239) from the shelves. Continue along the hall with overhead pipes...
...to a second catwalk parallel to the first. (The armored soldier and the crawlspace where you came in are now ahead on the left.) Cross this catwalk and continue down the stairs.
On the lower level, move around the edge of the room, keeping the wall on Lara's left. You can run without being noticed. Just don't get close to the soldier or fire your weapon.
Use the HIGH-LEVEL ACCESS CARD in the card reader to open the second door on the left side of the room. (The large, gray box hides Lara from the soldier.)
Enter the BRIGHTLY LIT ROOM WITH THE INSECT CASES but don't go too far in. Search the first cabinet in the near right corner to get a large medipack and a BOTTLE OF CHLOROFORM (19-20 (192-193/239), but avoid the rest of the room for now. If you approach the second cabinet or the glass cases, there's a short delay, then one case shatters releasing a swarm of insects.
Once you have the CHLOROFORM, exit the way you came in. The case shatters as you leave, but the bugs should disperse by the time you finish this next bit of business.
Walk around the boxes and approach the armored soldier from behind.
If you have Action Indicators enabled in the Options menu, you'll see the hand icon when Lara is in the right spot.
Combine the CLOTH and CHLOROFORM in your Inventory and use it on the soldier, the same way you attacked the cook in the Russian submarine.
Cutscene: Lara subdues the man by holding the chloroform-soaked cloth over his open faceplate.
NOTES: It is possible to climb onto the gray box just outside the bug room and shoot the armored soldier in the face without him noticing Lara. If you do, another armored soldier (not encountered if you use stealth) appears in the corner to your right. (screenshots) You can shoot him in the face as well, but as far as I know, there's no way to do this in stealth. The chloroform method is easier. This second soldier also appears if you fire your weapon after knocking out the first soldier. Neither of these soldiers count as official kills on the Statistics screen.
Once the suit guy is taken care of, return to the INSECT CASE ROOM. If the bugs have not yet dispersed, wait a bit before going in. Search the second cabinet for a small medipack and another BOTTLE OF CHLOROFORM (21-22) (194-195/239).
Use the HIGH-LEVEL ACCESS CARD to open the door the soldier was guarding.
Pick up the HK ammo (23) (196/239) lying on the floor.
Then, if you're going for "Mission Impossible," take a minute to set up the next encounter. In order to avoid being noticed, you must headshot the next armored soldier before he fires at you. Stand on the spot where you just found the ammo.
Draw the HK and use the scope to aim at the center of the VCI logo on the door at the end of the hall. Adjust your angle as needed. Then quick-save.
Walk straight ahead until the door opens, revealing the soldier beyond.
Quickly press Look to pull up the scope. You shouldn't have to adjust your aim much, maybe a tiny bit up or down. Then fire at the soldier's head. If you see his energy weapon discharge, you've been spotted. Reload and try again.
NOTE: Even if you shoot him point blank, the soldier does not count as a kill on the Statistics screen.
Pick up the IRIS LAB ACCESS disk (24) (197/239) the soldier drops.
Use it in the computer console to open the door at the end of the hall.
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