Offshore Rig
In the cell find the switch then clear a path to the door. The door is timed so hurry. Run left past the gunmen lead them around to the windows he will shoot them out while trying to kill Lara. Run right, push the switch then swim under the plane and up in it. Push the button then run back to where the gunman shot the window. This time run jump onto the plane on top fall through the trap door and get the pistols. Go back and kill the bad guys. Get the yellow passkey. SECRET # 1 go back through the window turn right follow to a room with water. Swim down pull the lever and return for air. Go back down follow the tunnel to the Jade Dragon careful of the fan. Return and use the yellow passkey. Go in press the button to turn off the alarm. Head right up the stairs through the door kill the guy get the medi pack. In the next room is another guy, kill him. Go into the bunkroom collect the harpoon gun and ammo from the bunks. Note the button it opens a trap door in the ceiling at the other end it is on a timer. Push the button and using the bunks go through the door. Slide backwards down the hallway climb down to the ladder. At the burners use the boxes to jump over the flames to the ladder. Be ready, at the top kill the bad guy and collect the red passkey. SECRET # 2 Climb the ladder and get the Stone Dragon. Head back to the yellow passkey room. To the left of the alarm button atop the stairway into the big room kill the Doberman and bad guy. Head up the ramp careful of the barrel trap. Use the red passkey. Head down the ramp kill the bad guys collect the ammo flares and medi pack. There is a box to the left when you entered. Push it then go around and pull it then around and push it again. Pull up on top of it and to the opening on the wall. Kill the bad guy in the hall collect the ammo and flip the switch. Swim across the tank, go right over the pipes then left and flip the switch. Head to the trap door that opened. Droop down then slide, go right to the end of the ramp kill the frog man down in the water. Turn to the other end jump in and quickly swim right to the far pillar climb up on it and kill the frogman who was following. SECRET # 3 at the bottom of the pillar where you shot the first frogman is the Gold Dragon get it and return to the pillar where you shot the second frogman. Climb the ladder to the cat walk follow then jump across kill the gunman head around to the high opening on the wall kill the guard at the opening. Jump through the window to get the green passkey. Return to the green passkey lock use it to open the trap door. Swim down through the tunnel pull the lever climb up and head down the hall.