As the level begins grab onto the ledge and get the Shotgun Shells, before you drop into the subway. Blast open the grating in the first hall and climb into the upper area where you can find several items. Kill anything sneaking up on you - rats are abundant in this level. Walk around and pull out the box with the climbable surface then drop into the ticket booth area. Kill some more rats then climb up the opening above the ticket booth where you will find the Maintenance Room Key. Leave through the door and take the escalator on the right. Jump the pit then head through the door. A button in the room turns on the lights which should let you spot an Old Penny lying next to the tracks. Drop down onto the lower tracks then sprint and dodge to the right to avoid the oncoming train. You should now be in a red room which you will see many more times during this level. Get all the items then climb up the ladder and backflip to the ledge. Monkey swing across the ceiling then turn right and drop at the wall. Do a safety drop into the drill room the jump sideways to the left as the floor falls out beneath you. Slide then jump and grab to hang onto the ledge and shimmy right as a blade comes down. When you get to the right, drop and grab the edge of the slope and pull up and do a backflip with a twist to face and grab the opposite ledge. One more safety drop to the next ledge gets you Secret #1. Back in the upper chamber, climb to the ledges and sidestep to the right then get on the block when the flames die down. Climb up and flip the switch to open a door back in the red room and activate another trap. Climb up into the chamber above the train platform and kill some rodents and gather up the items before dropping down to the platform. Return to the red room using the lower tracks and climb up to the trap door. In this room you will need to kill a guy then find the area to drop down and pull out the box so you can enter the next hall. Continue down this hall until you reach a green colored area with a pair of buttons. Press the left button then sprint to the middle and far right rooms to get the first Solomon Key. On your return trip through the red room do the monkey swing into the drill room to get the second Solomon Key in the hall above the drill. Head back to the ticket booth and use that Penny to buy a Ticket. Investigate the other escalator and kill anything that gets in your way. When you spot the mudslide you should also see a grating you can blast open. Drop inside to find Secret #2, then head down the tracks and shoot the guard on the right. Shoot him fast otherwise he will escape and have you run over by a train. In the small room, find and push the button to enter the next puzzle room. A small alcove should also open back on the track allowing you to get a Save Gem which you should get (and use) before tackling this next puzzle. This next room is tough. Press the button on the right just inside the hall then head down the long hall around a left turn to press the next button. A room should open, so enter and press the button on the left, then return to the hall and go around the turn to find a button on the right. Push it, then head back to the very first button and push it before heading all the way back down the long hall and pressing that button again. You should now have access to the Mason's room. If not - then be glad you saved your game. The first thing you want from the Mason's room, besides that Save Gem, are the Uzi's. There are some nasty floor panels that will collapse so watch out for those. The Ornate Star is behind the curtain. You can run to get it but you will have to jump back as the floor will have collapse behind you. Use that pair of Solomon Keys to get the Masonic Mallet. Watch out for attack dogs when you take this item. You should find a second door in the Mason's room where you can swim to a new area. Run, jump and grab the crack in the wall and shimmy right. Jump to the ceiling panel and then drop down to the crawlspace and continue until you reach the barrier. That Ticket will come in handy about now and so will you guns against the attacking rats. Use the Ornate Star in front of the door to trigger Secret #3. Get ready for some fast combat action before following the upper hall to the escalator. Continue until you reach the locked door then use the Masonic Mallet to open the door and follow the hall until you arrive at the train. Kill the guard then explore the darkness for more useful items and Secret #4. Enter the train and press the button then follow the passages leading to the end of this level but don't leave just yet. You should spot a guy with a torch running off down a hall. Follow him, but DON'T SHOOT. He is your ticket to the final secret in the game. As you go around the corner you will get attacked by two guys. Kill them both then press both of the switches in the small room to open the final secret back in the red room. Retrace your path back through the train and across an overpass and through a trapdoor. Back in the red room you should now see a new open door with lots of items and even some target practice to the left of the intersection. This is Secret #5, and once you have it you can exit the level via either ramp back by the room with the two buttons that opened this secret.
The important thing to remember now is that the Immortals are now "friends", much like the Monks from Tomb Raider 2. As long as you leave them alone, they will leave you alone. Take a left at the room with two pools and slide down to the room below. Pull up onto the right ledge then drop down to the crack then finally the ground where you can walk through some barbwire. Pull up where the crack widens to find a dark area also known as Secret #1. Exit via the hole in the ceiling then jump around the corner to grab the edge of the slope to get back up above the barbwire. Press the button to open the trapdoor then climb to the passage and get the Medkit before jumping and climbing up the mesh. When you get above the green gate do a backwards jump with a twist to land on the ledge behind you. Backflip and twist to reach the ladder behind you and climb up and drop then grab so you are hanging from the ledge. Now pull up onto the ledge to trigger Secret #2. Climb the mesh and crawl to the end of the passage where some ammo is stashed. Then crawl back until you can stand and drop down to the room where you can find a moveable block. Kill the guard then move the block to the other side of the track so you can enter the next area. You should now be in an Egyptian area and a ladder is nearby. Climb up and go through the opening. Follow the passage and move the box so you can climb up to put you within jumping and grabbing reach of the exit. Now use the pillar to reach the upper ledge to the left. Slide down the red sloped hall to the room with the block and move it over to the middle then return to the Egyptian room. Climb the pillar and find the switch on the wall to the left of the ladder. Do a running jump and grab to lower your arc and land on the ledge. Flip the switch to close the ladder door. Use the monkey swing to access a pair of alcoves where you can claim a Save Gem and find a switch that opens the a door above you. Climb to the top of this room using the ladder and various ledges on the left. You should find some items along the way. At the top of the slope you will want to slide and jump then grab the walkway. Slide again and jump as the floor gives way beneath you. You should now be able to get the Embalming Fluid before going on. Kill the guard up ahead then enter the crawlspace leading to the next room. As you exit into this next room you will be taking hits already from a gunman. Stand and kill him quickly then get the Rocket from behind the door before heading to the Sphinx room. Monkey swing across to the ledge and get the Save Gem then drop to the head of the Sphinx. Head to the left-rear corner and do a standing jump to a small ledge with a Medkit. Jump to the nearby pillar then do a running jump and grab the edge of the slope. Pull up and slide then jump to the ledge where you can see another Save Gem and register Secret #3. Once you reach the bottom, kill any enemies then move the boxes around. Stand on the first ledge and climb one of the boxes to access the upper passage where Secret #4 will chime. Jump and grab and then drop from the blue ledge to get back down. Move the other box to return to the beginning of this level where you can use the Embalming Fluid at the ceremonial altar to open the next passage. Dive in and locate the UPV. Head to the right to find the opening and enter the hole beneath the box as a croc closes in. Once inside, spin around and shoot the croc as he swims toward you. Collect all the items from the surrounding area and don't forget to catch your breath every now and then. A strong current will suck you into a new area over to the right. Follow this passage and spot the next secret through the window. Pull the lever to the right and push the button above to open the next passage further down this one. Continue along the passage and head to the right when you enter the large area. Air is above around a second right turn and down below is a room with a switch. Down next to this room is a small alcove in the wall with some items that make up Secret #5. Return to the large underwater area and head down the narrow hall. Climb out on the ledge to the right and stay low. Your final Secret #6 is underwater and to the right, but you must kill the frogman quickly or he will close it off and you won't be able to get it (without restoring your game). Take the underwater tunnel to the large area where there are lots of items to collect, switches to flip and doors to explore. Air is available in the upper-left corner and you will need to breath before each dive. When you flip the final switch the exit will open back to the left of the air pocket. A small army of frogmen will also swarm the area. Get out of this area as quickly as possible. Once you make it to the water passage, drop down beneath the flaming ledges and pull the lever to turn off the fire. Dodge the pistons and use the monkey swing to get to the opening in the waterfall. Use the Boiler Room Key to open the door back through the underwater chamber. Follow the machinery to the left and kill some guards. The trail should come to a dead end but a crawlspace is nearby which leads to the next area. Do a running jump and grab onto the ledge. When you reach the purple ledge it's time for the next level and the next BOSS!
This entire level is pretty much one big fight with Sophia. Try to keep under cover except for those brief moments when she has to recharge her deadly energy bolts. You start in the office and the battle begins when you near the end of the hall. Run for the ramp then pull up and turn. Ignore the monkey swing and just do a running jump and grab to clear the gap. Pull up onto the pillar then pull up above the monkey swing. If you look away from Sophia you should spot a metal box and if you look over the edge you should spot this level's only secret. Back off and hang from the wall then drop and grab onto the next ledge and pull up into the alcove to claim the items and register Secret #1. When you are ready to get back into battle, hang and drop off to the floor below. Climb back to the ledge with the metal box and find the catwalk leading away from the secret area. Follow it to a button and press it. Do a roll and run back quickly to avoid incoming fire from above. You should now find an open door to the ledge above. Pull yourself up to the ledge and head along the catwalk to the ladder. Wait at the bottom of the ladder for the sound of Sophia recharging her energy before trying to climb the ladder. At the top, climb into the space to the right and get the Medkit if it's safe. Crawl out then get on top of the crawlspace. Run along this upper catwalk and do a running jump to grab the far ledge. Climb up and move forward to the fuse box on the wall. Put a few bullets into the box to finish off Sophia once and for all. One of the four relics is visible across the way, but your immediate path is pulsing with electricity. Return across the upper catwalk to the crawlspace and make the small jump across the street. Watch out for electrified areas and pull up onto the tall wooden box then over to the next box. Climb over the box to the right of the relic to find the main power switch. Push it to kill the power then safely claim your artifact. That's it - I hope you enjoyed your stay in London.
Vultures above and snakes below will be your main threats in the desert. A snake to the right of your starting location guards a Rocket. Wade across the water and enter the passage to find a block you can push. Grab the ammo and head up the trail. A pair of running jumps should land you on the middle ledge where you can do a safety drop to the area below. Snakes guard Secret #1. Don't let them back you into the barbwire behind you before you kill them and get the items. To exit this area you need to push that block you moved earlier then jump down to the platform below and do a running jump and grab to get off this ledge. Continue until you see a metal chute then head right and jump up to the ledge nearby. Kill the snake hiding in the bushes then run and jump to the next ledge. Run right off the end of this ledge to drop to the next one below and continue along until you can drop down and get a Medkit. Climb back up and continue to the rocks where you can run, jump and grab to reach the rocks where you can deal with another snake as you make your way to the top of the chute. Drop into the chute and fall into the water. Swim until you can surface for air and climb out. Look around and find the trail leading away from the waterfalls. Head down the path and defend yourself against the vulture attack. You will be taking this same path two more times so get used to the jumping and climbing you are doing this first trip. Continue until you reach the high ledge at the same level as the cool rock formation. Do a running jump across the canyon and climb down to locate the next secret. Climb down the ladder and stay to the right. Drop from the ladder and grab right away to cling to the crack and shimmy right until you can climb onto the ledge and get Secret #2. Jump into the water below and get all the items that are stashed underwater as well as several alcoves near the waterfall. Exit the water by climbing up the red rock near the falls. At the top, do a running jump to the slope across from you then head down that path again for your second of three trips along this trail. Take the upper route this time and kill another snake hiding in the bushes. Jump past the rock and avoid the hole on the ledge. Do a drop and a grab to the crack below and shimmy left until you can climb up to the ledge. Jump and cling to the rock face above and monkey swing to the face of the cliff, then climb up the cliff to the left. Take the Save Gem then find the Flares and TNT on the ledge below. Looks like you need a Detonator Key, so move on for now. Head to the waterfall and jump over to the slop and grab on as you slide off. Climb down to the ledge below and continue along the cliff until you can jump over to the rocky surface and climb to the top. Do a daring backflip over to the flat rock then jump and grab the slope between the pair of waterfalls. As you pull up you will start to slide toward the ledge which you will need to jump and grab to reach. Grab the ammo before jumping to the crack and shimmy right. When you get the wide angle camera view, drop and jump to do another backflip across the water. Keep jumping along the platforms as you make your way upstream. You should come across a large cave with a waterwheel. A boulder on the left shore is the hiding place of another snake. Crawl under the opposite rock and go up the ladder to get Secret #3. Climb to the left and drop down to the floor and kill the snake. Return to the shore and investigate further. To the left of the waterwheel is a small room with an elevator. Here you will find the Detonator Key and a guy guarding it. Kill him then climb up the waterwheel and follow the channel to an open area. Watch out for more vultures at this point. Dive into the water and swim down to the right where you will find a switch that open a door leading to a room with some ammo. Flip the next switch to open the underwater passage and enter to find another switch hidden along the dark wall above. Pull it then swim back through the passage pulling another switch as you make your way back to the hall above.
Find the final switch and pull it to start the waterwheel. Head back that direction and get the items from dry river bed as you do. Use the upper ledge then jump down to the river bed. You should find a block down here that will let you get behind the falls. After you have gotten everything you want, return to the elevator by the waterwheel. Kill the guard and take the Detonator he was protecting then make the long trip back to the ledge with the TNT. You have the necessary items to do a little blasting but watch out for that boulder that's just waiting to crush you. Jump to the left to avoid getting crushed after you blast the TNT. Explore the demolished area and climb up the new ledges to reach the next area. Head around the fence to the left and climb into the dark passage. Continue until the path splits and pull up to the upper ledge. Jump into the water and swim around to find a pair of switches hidden in the tunnel and behind the pillar. Flip them both then return to the outside area by the fence. Head down the large cave and kill the snakes before flipping the next switch inside the building. Make another trip down that dark passage and this time take the low path. Kill some guards, then jump across the fence to the box and put some distance between you and the hum of the electric fence as more guard move in for combat. Explore the nearby building to find some guards watching over a Quad Bike and a lock. A few bullets should get you the necessary permission to take the bike for a spin. Use the box and the grating to climb onto the roof of the next building to get the Generator Access Pass. You could also ride and jump the ATV onto the roof. but it is quite dangerous and you will probably die a few times in the attempt. Return to the lock with the Access Pass and open the door. Do an immediate backflip and kill the power to the electric fence. Push the button next to the main gate and get on your ATV and ride out of this area. Head down the cave and jump the fence to exit the desert.