Take the stairs up to your right and get the shield belt beneath the lift. Quickly retreat, a Skaarj Trooper is coming down after you, kill him and ride the lift up, turn right and enter the door to confront a Skaarj Lord, after killing it, enter the green pulsating chamber on your right.
Turn right and follow the ledge around to your right, the door you come to on your right will do you no good. Follow the corridor around to your left and get the Razorblades near the control panel on your right. Around the next corner, two Skaarj Troopers are waiting. Bounce a few grenades around the corner and lure them out individually. When clear grab your prizes then open the door.
Attack the two Troopers in the room, and be aware that two reinforcements are on their way. Once they are all dead, go back out the door through which you just entered and follow the corridor to the opening on the left.
Under the ramps here you’ll find a stash of equipment. Collect everything by dropping off the side between the railing and the ramp, then climb up and get the Assault Vest above. The area barred by laser beams is currently inaccessible leave the room.
If you’ve killed all the enemy, the previously locked door will be open. Two Skaarj Troopers will come at you from the darkness, blast them then head down the steep corridor. Below, start shooting at the Skaarj across the walkway from you and keep following the walkway to the end. Ride the lift and at the top step off and blast the Skaarj to your right.
Follow the corridor to your right and walk out onto the crossbeams ahead. Jump down onto the green force field and approach the Security Access panel ahead. Several Skaarj will attack from behind you, but if you break out the BioRifle and mine the narrow hallway well, you should be able to keep them away long enough for you to activate the panel and gain access to the Security Post.
As you enter the hall that leads to the Post notice the Super Health Pack ahead. As you approach it doors will slam down in front of you and a Skaarj will blindside you from the right. Retreat and blast it, then continue down the corridor he came from. Get the supplies from the next room, then ride the lift to the upper level.
Turn right as you get off the lift and push the button at the end of the passageway. Go back past the lift, and make your way through the purple laser beams by waiting for each to pass, then stepping behind them. Get the stock then go back down the lift to the room below. Grab the Super Health Pack and cross the new bridge to the other side. Take either passage and kill the two Skaarj Warriors ahead.
Kill the remaining Trooper in the short hallway and push the button to open the Core Access door. Enter and pick up the ammo inside and further along the hallway. Enter the doors at the end of the hall to access the Skaarj Generator.