Part 10

From the start, find a metal door on the left-front. Open it to find a medical bag and enemies.

Kill enemies to the left, then turn around and kill enemies on the upper level.

Go upstairs to your left, then down the walkway, killing enemies to the right and then the left. Grab any needed items. The left side has many boxes.

Clear the section, grab the elixir and other items.

Climb on the boxes to see a ledge against the wall. Jump to it.

Go to the end of the ledge, stop before dropping off, turn right, and jump onto the higher walkway.

Continue down and drop onto the beam to your left.

Crouch on the beam and go past the room wall, over the elevated tracks. Turn left 90 degrees to see the tracks make a right turn.

Drop onto the tracks and follow them up a big slope, then down a big slope. You will arrive at the room where you took the elevator down, but on the elevated portion.

Walk until a separated section of elevated tracks is to your left. Turn 90 degrees to face it. Save your game now.

Jump onto the elevated track. If you fail, reload. If you have cleared this section before, there should be no enemies to the left and right.

Continue down the track until it opens to the left. Watch for an enemy to the left. You are now on the third level of the building where you killed "Bloody" Mary.

Go down the track and you will see a walkway to the left. Remember this spot. Walk down, kill any enemies, and keep going until you have killed everybody.

When everyone is dead, climb back up and return to the previous spot.

Continue down the track until you end up in a room. Kill the guards; the room dead ends unless you jump onto the conveyor belt.

Follow the belt down, crouch if you wish, or look left and right and kill more enemies.

Follow the belt until you reach the "stompers". Jump off to the left side and follow the path down a spiral staircase into the room below the stomper.

Follow the only exit, kill enemies, and follow the path down.

When you reach the corridor that opens left to lava, be careful as one enemy may appear above and behind you.

Continue down the path and try all the forks. Most are dead ends, but one leads to a door into a room, which leads into a big room with many boxes.

Kill the many enemies inside. Slide right slightly from the door and use your scope to find and snipe Dr. Death. Alternatively, sneak closer and shoot him. The mission ends upon his defeat.

After defeating Dr. Death, he mentions the Cliff Dwellings being 10 miles away. This is your only hint for the next mission.

Mission Briefing: The Cliffs You have arrived at the cliffs, and someone has prepared a welcome for you.

Start on the top of a river stream. Follow the river down, grab any needed items, and kill enemies from long range as much as possible. Watch for snipers from upper levels.

Continue down the river. To the "right" is a room with 3 sliders. To the right of that is a room with 3 "locks" and a "stone key" inside. You need to collect more keys to use here.

Continue to the end of the river, killing enemies. On the right side, you will see a hint for the slider: Down, Up, and Up.

Go to the slider room and set the sliders to Down, Up, and Up. The door beyond the slider room will open.

Go in, clear your way, and continue forward onto one of the ledges you were shot at before.

Clear the ledge, then enter the room. A passage leads through a dark tunnel and out into sunlight into a maze.

Explore the maze thoroughly and kill all enemies. Use the map to see where you haven't been. Keep the wall to your right and take the "right" fork until you need to turn around.

You will find pits and enemies at certain junctions. The pits contain stone keys. Once you clear the maze, you will have collected the full set of stone keys.

Return to the "slider room" and head across the river.

Go to the "stone key" room and try all the keys you collected. The combination is likely "heart", "rain", and "plant" on "good" difficulty.

Continue into the passage, killing enemies. After a winding passage, you will reach a wall with a sharp cliff dropoff. Note the black spot on the wall to the left.

Kill visible enemies, likely via a staircase to the right-front, then go down the cliff.

Move forward, kill the enemy inside the "room", and you will see a hole. Arm your shotgun and drop through the hole.

Climb out and kill visible enemies (turn around if needed). Turn opposite the enemies you killed and climb out.

Follow the passage to a pit, kill the enemy, and claim the "swirl" stone key.

Return to the pool and climb off the other side. There is a side door requiring you to crouch through.

Inside this side area, you will find two dynamite sticks and a cracked wall. This is a dead end. Backtrack to the pool.

NOTE: Secret area. Use a dynamite stick on the crack in the wall and back off.

Blow a hole in the wall and continue through the passage. You have two spare keys and will find spots to insert them. Try each key in the spots.

A new door will open, leading to a passage that drops you off at a stream. Take the stream and fall into another pool. Note the hint in the pool: Up / Down / Up.

Climb out and shoot the enemy. Climb up and set the sliders on top.

Climb back down and you will see an opening on the far right of the pool, underwater. Jump in and go through to return to the main 'river'.

From the pool, climb up.