Run forward, destroy few objects and collect the items hidden inside. Go further and watch a short cut-scene. Use sniper rifle to eliminate enemies. Don't leave the place because you are very safe in this position.
Jump down on the left side and collect items. When you get near the bridge, you will be attacked by another group of maijins. It will be a very close contact because there is no place to run to. Use the rifle.
Eventually you will reach a red crank and use it. Your partner will use the mechanism and you have to go the location around and go down onto the raft.
During the drive you have to observe buttons' icons appearing on the screen very carefully. If you perform this Quick Time Events without making a mistake, you will avoid dying in the crocodile's jaws. When you reach the place of your destination, press the button and unblock the door to meet your partner. Go over the bridge together and leave this location.
Go through the cave slowly. Shoot two streetlamps and collect Ruby (Pear) and Sapphire (Square). When you go out, head towards tents (BSAA Emblem 16). Search both tents and collect ammunition, Green Herb, gold and Jewel Beetle (before entering the tent).
You have to move according to the map. Go through the door and enter the refinery. The way you must take is blocked and, what is more, you are attacked by maijins.
When you are still upstairs, eliminate the opponents using bows. Jump down and eliminate the other enemies. Save ammunition at all costs and collect everything which was left by maijins.
You have to get rid of the flames which block your further way. You will have to use three red knobs to do that. Use the ladder to get onto one of the platforms. Turn the wheel and eliminate enemies which are attacking you. Save ammunition! There are two ropes in this location and you will need them to get to the desired wheels. First slide left (if you slide right the result of the game won't be saved). Turn off the gas supply, collect items and open the door. A maijin with a mechanic saw will attack us. When you eliminate him, slide right and repeat the action. You will be attacked again by the same type of enemy.
A good way to eliminate him is to use the mines you have collected in this location. When he detonates it, run up to him and punch him(a fist is more powerful than a gun). If your gun is loaded, use it of course. In general, keep on moving and don't let anyone trap you in the corner. After the fight collect Venom Fang (the previous maijin left it as well). When you get rid of the fire, enter the building. You have to deal with another group of enemies. For that reason, save ammunition. You will come across Sheva in one of the rooms. After watching cut-scene, you have to protect her from maijins. She breaks into the computer and get the elevator started. When it happens, collect all the items and use them. The enemies will appear one after another so don't waste time.
You get to the other side of the room by going on the platforms situated at different heights. Use lead and mines to eliminate your opponents.
You will reach a closed door and it will take some time to open it. Use it to eliminate the enemies. There are maijins with mechanic saws among them. The mines work here perfectly because, opposed to the previous location, there is not enough space here to maneuver. Gold Ring and other objects. When the door opens, run further (BSAA Emblem 17).
Now it is time for timer. You have two minutes to get to the other side of the harbor. You don't have to fight all enemies. Shoot only the ones who appear on your way. Shoot the lock hanging on the door and run further. There are few items in houses nearby. When you get to the boat, this episode will be over.