[8.9]. Mission 9 - Skedar Ruins: Battle Shrine

Identify temple targets: Proceed forward and kill the Skedar Monster to your right with the Falcon 2. Equip your R Tracker (a device to find specific items) and look for yellow dots on your radar (a minimap (the small circular map in the bottom-left corner of your screen) showing nearby points of interest). These yellow dots indicate obelisks. Place a Target Tracer (a device to mark targets) on each obelisk you find. Navigate around the central rock and eliminate the two monsters, one of which is cloaked. Find an obelisk in the middle of this area; if a yellow dot appears on your green dot (your current location on the radar), it's a required target. Continue through the next opening, proceeding right and killing any monsters encountered. Follow the path until you reach a fork with two monsters. Kill them, then take the right path to find another obelisk. Place a target amplifier (a device to enhance targeting) on it if it's a required target. Return to the fork, proceed past it, take the first right, and kill the monster at the end. Take another right near where the monster was, kill the two other monsters, collect their ammo, and take the right path to find another obelisk. Place a target amplifier on it if needed. Turn back and head towards the other set of stairs, but do not ascend them. Turn right at the foot of the stairs to find an opening leading to another obelisk. Kill the monsters within and place a target amplifier on it if necessary. Once you have located three obelisks, the first objective will be complete.

Activate bridge: Leave the current area, run past the two dead monsters before the stairs, and turn left. Continue until you reach a fork and take the right path. Equip your Devastator (a weapon) and set it to Wall Hugger. Look over the edge and shoot a grenade at the wall behind the monster to your left. If the bridge is not present, fall off the edge onto the ledge below, turn around and kill the monster behind you. Turn around again and proceed forward until the two ledges merge. Move to the other ledge and make your way to the wall on the left to climb up. Run down the path and drop into the next area, killing any monsters. Go straight from your entry point until you reach the second left turn, facing a wall. Equip your IR Scanner (a device to detect hidden elements) and notice the wall is a lighter shade of red, indicating it can be destroyed. Use a grenade to blow it open and enter the hole, following the tunnels. After dropping down, go left and through the first door on the right. In this room, kill the small monster, then go right to find a movable stone. Push the stone onto the light brown area on the ground to activate the bridge and complete the second objective.

Assassinate Skedar leader: Cross the newly activated bridge by leaving the room, turning right, following the path, and crossing it. Proceed forward, equip your IR Scanner, and kill any monsters that appear. Continue until you reach an area with a door to the left and a ramp going up to the right. Ascend the ramp and go through the door at the top. Remain at the doorway and kill the two monsters below, who are armed with Rocket Launchers. After they are defeated, cross the bridge and kill the monster guarding the next door. Enter that door. The Skedar Army is in suspended animation, with only one emerging at a time. After defeating them, proceed through the next door. Prepare for the final boss fight in the subsequent room. To defeat the Skedar leader, shoot him until his shields turn green. Then, shoot the spikes behind him. He will eventually descend and chase you; run away and quickly eliminate any minions he summons. After destroying all the spikes except the central one, use the Callisto's rapid fire function to damage the large spike. Enough damage will defeat the Skedar leader, completing the mission and the game.