You will start off in a blizzard in the mountains. Use your location device, and follow the blue line to know the pathway of your destination.
Hold either R1 or RB pending on system, to sprint. Make sure you are sprinting towards your mark. You should run into some crates. Stomp them by pressing the appropriate button that will be shown on screen.
Shooting is fun and basically the basics of all other shooting games. Hold the Left button (L1,LB) then the right trigger or R2 to fire. Sqaure will reload.
Shoot the break latch, then press the action button, to open the door.
A person will come out dying, with an axe stuck into his back. Then an enemy zombie will pick up the axe and go after you. Blast him with the assault rifle, head shots work best for this enemy type.
Once inside the door, there will be about 4x Zombie's to take out.
Aim for their heads, shoot with assault rifle. Keep your distance. If they get to close use a melee attack.
There should be about 4 of these guys. Pick up the drops, after the battle. Pick up the power cell then watch the scene.
DOWN THE MOUNTAIN
You will rope yourself to the ship so you don't die. Follow the onscreen tutorial and manuever yourself down the moutain side staying alive.
A Huge boulder will appear, you will be on your back sliding down the mountain side, fire if you wish. Although ultimatley you will be knocked back into another scene with your commanding officer.