Gears of War 3 - Watery Grave

We have another on rails section on our hands. You'll get a moment to try out the new guns before you're required to use them. When you do, pay attention to the blue arrows that pop up on the screen. That's the sonar and will tell you where they're coming from. Usually you only need to concern yourself with the front and right sides.

After you enter a cave and a short cutscene you'll end up being chased. Shoot for the face. Eventually you'll make it out of the cave. Keep trying to shoot for its face when you get the chance and watch out for mines. Soon, you'll be told to just focus on the mines. Do so. I found it was easier to just look for the chains and shoot those out rather than looking up and down as well as left and right to find the balls to shoot.

Once you get beyond the mines, the Leviathan will return, first you're going to want to shoot it in the fact. After you run through the cave, you want to just aim for the tentacles. A strong currently will sweep you up. At that point just try and aim for the mines. For the most part you want to look forwards for this part. And then you'll be attacked by torpedoes. You want to take out both the torpedoes and the turret. It might take a few tries to get the turret so take your time. As for the torpedoes, it's usually easier to just lead them and shoot a few shots than trying aim directly at them. Most of the torpedoes will come from the right side.

Blow open the front door and when inside, keep an eye open for torpedoes but really just keep your eyes forward and keep firing as soon as you see something. Soon you'll come to a couple of turrets and a whole lot of torpedoes, blow them up and you're home free.