1. Since you've found all the secrets your now entering the bonus level have fun. On left climb up on block jump grab climb up on catwalk above, run jump to catwalk across. Follow catwalk to right, at end run jump grab to next catwalk across, turn right run jump to catwalk across, on right climb up to catwalk on left. Turn right at end jump grab to catwalk above, turn left run jump to catwalk across, jump grab to catwalk above collect UZI clips return back to bottom catwalk. Turn around run jump back to catwalk across, on left run jump grab to catwalk collect Flares. Turn around run jump to pillar straight across (make sure your full of health for this drop will take most of Lara's health). Turn left jump grab to ceiling monkey swing across to almost end, drop down to slider grab at end then drop down through cathedral ceiling landing on catwalk below.
2. On left collect Lg. Medi. pack straight ahead run jump to ledge on left collect Flares return back to catwalk. Turn around run jump to white ledge across, on left at second brown square in wall jump grab climb up into passage pull lever at end, opens trapdoor in another area return back to white ledge. At edge by fence hang drop to small white ledge below, turn around run jump grab to catwalk across, at edge jump grab to ledge above. On left climb up to next ledge, on right run jump grab crevice shimmy left climb up on ledge at end collect Lg. Medi. pack pull lever, opens door below on floor, return back out shimmy right drop to floor at end. Head right then another right to far left corner enter through door, run over collapsible floor pull lever it raises trapdoor above first lever you pulled. To exit out jump grab ceiling monkey swing across spikes return to main room.
3. Head right then stop turn toward wall on right jump grab climb up on ledge turn around run jump to catwalk across. Turn left run jump grab to small white ledge then jump grab up to ledge above to passage where you pulled first lever. Turn around jump grab to ceiling monkey swing to left, at end drop grab to ledge below climb up turn around jump grab climb up wall ladder at top collect Vault Key. Return to ledge below climb up on ledge on left ride trolley across drop off just past spikes, turn around jump grab to crawl space on left crawl through hang drop on other side another door will open enter through door.
4. Drop down to ledge below then drop to another ledge below, follow passage around to right, at end on left drop down to yet another ledge below collect Sm Medi. pack. At edge jump grab ceiling monkey swing across you'll catch on fire but drop at almost end into water, swim left then hang right timing your swim past pistons, at end climb out on right. Straight ahead crawl under ledge to right, push switch, opens trapdoor in main room. Turn right jump grab up to crawl space collect Sm. Medi pack, return back where you exit the water hang left on left climb up on wall ladder, at top jump over brown floor or you'll fall through and catch on fire enter through door.
5. Head left at end on right jump grab climb up on ledge above, jump over first gap drop into second gap collect UZI clips and Lg. Medi. pack, climb out head to first gap drop down to water below surface out on ledge. Head left, on right in middle alcove shoot out grating pull lever at end opens trapdoor in another area, turn around exit back out by jumping over two blades. Head right then another right shoot out next grating collect Flares exit out use Vault Key in lock enter through door.
6. Head left collect Lg. Medi. pack in right corner, then head right drop down into water. Swim just about to bodies floating hang right then another right, at end collect Life crystal on left. Swim back to the left surface out shoot dog and badguy. On left past burning barrel jump climb wall ladder, at top head right check out the ammo on the floor.