Walk down the hallway into the first large room, kill the ‘Brute’ patrolling nearby and jump into the skip for a health pack and a clip. Try sliding a small crate across the floor to leap onto the larger crates for more ammo. If you fire your dispersion pistol into the dark area you should light up a tunnel which leads to an Assault Vest. Go through a doorway with red characters. Activate the lift in the hallway ahead to descend. Kill the Tentacles you encounter below. Shoot a pair of small crates to reveal a Shield Belt.
Deactivate a force field upstairs by pressing both buttons on the generator at the end of the hallway. Return to the lift, as you go down the corridor, bars will spring up both ahead and behind you, the lights will go out and a ‘Skaarj’ is released. Use a flare after a few seconds of darkness and keep moving when fighting. After you kill it the bars slide back, and small panels are opened a both ends of the hallway with some stock, get it and continue to the lift.
Kill the Brute and take the lift up to the main room. Dispatch the adversary and go through the rocky tunnel, kill the Tentacle and continue to the cavern, kill the Brute there. Then shoot the barrels on the ledge to reveal a tunnel that leads to a health pack, the other ledge has clips. Go through the corridor with the two lights and kill the tentacle in the corridor beyond, take the lift down and follow the corridor at the bottom. Kill the Brute and head slowly across the platform. Explore this area and kill the Skaarj you encounter.
Find and follow the ‘Nali’ to a secret spot containing a Stinger and some Tarydium Crystals. Find the sunken bridge that crosses the lava, there is a red button at the opposite end of the bridge. Shoot it and the bridge rises. Cross it and go through a long tunnel, kill the opponents then shoot the explosive barrels at the end of the tunnel and enter the passage. Kill the brute and press the switch near the control panel in the room you emerge into. Four red buttons are revealed on the rooms central column. Press all four and two sealed doors open, fight the Skaarj that appears and go through either door.
Deal with the tentacle you meet and ride the lift up to a waiting Skaarj. Search the crates for supplies then continue along the corridor away. You enter an area with a platform overhead with Brutes. Shoot one then shoot the explosive barrels. Kill another Brute and Tentacle. Use your dispersion pistol to find a hole in the wall. Enter it and find a Super Health pack in the tunnel. Shoot both crates to clear the lift area, then press the red switch, which drops the lift. Ride the lift up to collect more resources, then follow the platform into a tunnel and into a room with a Nali, ignore it and run into the new room. Kill the Skaarj and return to the Nali and follow him to the Assault Vest. Opposite is another alcove containing more Tarydium Crystals.
Continue along the corridor and kill the Tentacles you find, drop down at the end of the corridor and kill another. The ledge provides a view of the blue cavern, a Skaarj will appear, kill it then creep towards the bridge. Kill the Brute ahead without going over the bridge, then cross the bridge by walking over the inclined supports to get a spare clip. Take the ledge to another bridge and brute and cross it in the same way. Go through the hallways flanked by fire filled tubes, kill the Skaarj and Tentacles. Now enter a room with a lofted platform. Shoot crates in the lower level of this room collect some gear, then go upstairs by slowly walking toward the platform until a lift descends. There is a stinger in a crate upstairs and another Skaarj. Take a short tunnel to a balcony overlooking a new room with exposed metal beams.
By approaching this room this way you can collect two ASMD Cores on the balcony, and drop down to the beams to collect clips and a Shield Belt from a pile of crates accessible from the beams.
The room has a locked door and a lift activated by a lever. Press the lever and kill the Brute on the lift. Ride the lift up to a catwalk that crosses a room with huge fans.
When you approach the area with the broken railing, crouch and crawl past this area. When you reach the glass door ahead, shoot it and enter the room, press all three buttons and sneak back onto the catwalk just far enough to jump over the railing. Jump away from the spinning fan and stay close to the wall. Downstairs, locate the small tunnel leading back to the metal beam room, enter the big door that’s now open to complete the level.