Air Defense Bunker

As the game starts, head to the left and talk to Sgt. Morris there. He will tell you to head through the doors to hook up with your squad there. Make your way tot eh door and enter the base. Take out the Strogg that appear and make your way to the right and across the stairs there. Follow the hallway along and go through the next door. You will enter a room as you see a soldier getting hauled off. Continue around the room and to the right and grab the machine gun. Continue through the corridor and to the next door and you’ll run into PFC Kovich fighting a Strogg. Take it down and continue to follow him through the next door. Make a right down the hallway and watch for the pipes on the left. Make your way to the end and go through the door there to meet up with PVT Marshal and the rest of Badger squad. After talking to Miller, you will need to run back to the entrance of the base and grab the medic that is waiting there. When you reach him, talk to him and he’ll start to follow you. Make your way back to Badger squad and heal up the marine there. Once you have him healed, head through the door to the right and you’ll come outside to meet CPL Cortez. After your chat with him, head to the left and enter the doorway there.

Air Defense Trenches

As you enter the next corridor, you’ll get a radio message saying that they need the air defense cannons brought down. Walk to the end of the corridor and hop on the lift. Ride it up and grab the armor by the computers. Take out the large Strogg that appears and continue down the stairs and through the door. Continue to follow the corridor along and you will come outside to a trench. Follow it around until you come to an opening and help the marines there clear out the intruding Stroggs. Once they are down, continue around the corner and make your way to SGT Bidwell and the rest of Rhino squad. After the conversation, you will need to make your way to the hanger. Make a left and follow the trench around, clearing out the Strogg forces until you reach the red door. Enter it to continue.

Hanger Perimeter

As you enter the next room, you will get a cut scene showing off a grenade tossing Strogg. Take him and his cronies down and continue through the door on the left. Make your way to the end of the hall and talk to Mahler from the Viper squad and grab the shotgun he gives you. Head through the door they open and continue into the next room with spinning gears. Kill the Strogg here and make your way to the right and up the stairs. Head through the door there and continue to the end. Go through the door and down the circular stairs. Enter the next hallway and make your way to the right. Grab the health and ammo there and hop on the lift. Ride it up and make a right when you get off. Head through the large metal door there and start wiping out the Strogg in here.

Once they are all down, there will be a glass door that cannot be opened at the far end. You’ll need to find a way to get through it, so head through the open door across from it. Enter the hanger and clear it out and head through the next door. Climb the ladder there and use the control panel at the top to lower the bridge. Run through the next door and use the control panel there to lower the engine to the platform. Walk forward and drop off the edge and use the control panel on the engine to turn it on. When you do, the glass will melt and you will be free to continue. Enter the next room and walk up to the control panel in the center and wait for the platform to rise. Kill the Strogg across from you as they enter. When the bridge lays down, head across and run to the left. Enter the door there and kill the few Strogg down the stairs on the left. When they are toast, enter the door across from where you entered and exit as you hop on the lift.

Interior Hanger

As you step off the lift, enter the next corridor and make a right to the next door. As the lights go off, turn on your flashlight and follow the team into the next room. Watch out for the turret on the ceiling and the Strogg that will enter. Clear out the room and continue back to meet Rhodes at the lift you got off of earlier. Now you will need to escort Rhodes to the hangers so that he can plant the charges there. Head back tot eh dark room were you just were and enter the door on the left. Enter the next large room and enter the door on the right. Kill the few Strogg in here and let Rhodes plant the charge. Once he does, head back out and head up the stairs on the right. Follow the corridor around killing the Strogg and head down the stairs there. Enter the door on the right at the bottom and clear it out of Stroggs. Let Rhodes set the charge and then lead him back out and up the stairs on the left. Enter the door there and run through to the observation room to watch the fireworks. Once the charges go off, you will need to head to back and regroup with the Rhino squad. Jump on the lift in the corner of the room and hit the control panel.

MCC Landing Site

Step off the lift and head forward to meet up with Strauss. After your chat with him, head through the door behind him and continue through the next few areas until you meet up with Morris. When you do, follow him to the large red door and go through to meet up with Voss and Rhino squad. Take the grenade launcher he gives you and then follow them through the trenches. You need to make your way to the controls to take the cannon offline. Continue through the trenches until you come to the locked door around to the left. Hop up on the boxes there and jump on top of the bunker. Kill the large Strogg that appears and drop down the hole he came through. Use the panel there beside the door and open it for the squad. When they come through, enter the next door and enter the long corridor.

Kill the Strogg here and head for the door at the far end. Hop over the railing and head for the door across from you. Wait for the Strogg to come through it and kill them. Head through and make your way up the ramp to the right. Clear the Strogg there and then you’ll be able to hop in the cannon. Blast the door directly in front of you and hop out of the cannon. Make your way back down the ramp and hop on the lift around the corner. Ride it up and go through the door on the left. Kill the Strogg berserker here and continue tot eh door at the end. Now you will be where you entered the bunker, so head back outside and make your way up the ramp to the large door you blasted with the cannon. After the cannon is toast, enter the destroyed corridor and enter the door on the right. Follow the hallway around and through the two large metal door until you get outside. Once you do, take cover behind the overturned vehicle and wait for the Hannibal to destroy the turrets. Once it does, wait for it to land and then run under it and hop on the lift to board it.

Operation: Advantage

Now that you are aboard the Hannibal, you need to get to the briefing room. Head up the stairs to reach the decontamination chamber and get clean. Go through the door there and make a right towards Central Command. Make another right to Drop Pod Command and continue to the door at the far end. Follow the hallway to the end and you will reach a door labeled briefing. Make a right when you reach the Rhino Briefing Room door and follow the stairs down to trigger the cut scene. After the scene is over, leave the briefing room and make a left. Enter the armory and grab your weapons. Once you have them, you will need to meet up with CPL. Spencer and ride to the convoy. Make your way to the walker hanger and step on the lift in the center of the room to go back outside.

Canyon

Once you leave the ship, head to the far left and you will see the convoy there on the distance. Make your way to the front of it and hop on. As it starts to move enjoy the ride since you really won’t need to do much. The convoy will stop once or twice for you to kill off some Strogg and then resume. Once it stops for good, they will tell you to hop off and you will need to find Bidwell. Head down the corridor past Strauss and Cortez until you find him. Have a chat with him and then hop on the truck behind him. Now you will have to man the gun as it makes its way through the canyon. Kill the Strogg that run out as well as the turrets that get dropped from the stealth fighters. Once you come to a part of the track that has mines on it, Rhodes will hop out to disarm them. You will need to protect him as he moves from mine to mine and the Stroggs run out to attack. Kill them as they come until Rhodes runs back to the truck. Start moving again and head through the next door and continue killing the turrets and soldiers. Once you get outside, you will need to move forward and take out the turrets on the building to the left and right. As you take them out, some more turrets will drop in as well. Kill everything and when they are all dead, the truck will stop at the entrance and the door will open. Hop off the truck and enter it. Head up the stairs on the left and go through the red door there.

Perimeter Defense Station

Walk forward and make a right to step on the lift. As you do, you will be handed a nailgun. Sweet! Ride the lift down and make your way forward to the group of soldiers. Enter the door on the right and follow the corridor around to the control room to talk to Voss. Now it seems you need to go and fetch the engineer from the convoy in the basement. Head back out and make a left through the door. Talk to the marines there and they will accompany on the trek. Head through the door on the right and enter the room. Kill the Strogg on the top floor and make your way to the control panel in the left corner. Call the lift up and then ride it down. Enter the door to the left and hit the control panel at the far end. When the lights come on, Strauss will open the door for you.