Use the chain to get to the long bars. From there go to mobile stone block. After that move to the bottom. In the right side of the room you will find the rock which is blocking one of the gears.
Draw it out and insert under one of the blocks which is moving vertically. Climb on the rock and jump from it to longitudinal block. Move up. You will see that top cylinder is now moving. When it moves to second part of the corridor, jump above the lower cylinders, crouch and move under the top cylinder.
Jump on the hammer and use it to get to the opposite side of the room. Enter the next corridor and slip slightly down.
Use the wall to swing yourself, jump right and clutch the edge. Go right. You will land on the wide rocky shelf. Jump from there to opposite side. Leave the room. You will find yourself in big hall.
Unfortunately, you will find out that the bridge is destroyed. Jump on broken pillar and slide down from it to a wooden beam. Jump in the direction of the next pillar (just as it is showed on the second screen)
After that you have to go further by recoiling from walls.
When you do this jump on the other side using hook and line and after that go right.
You will find the room where big and apparently dead creature lies. This is the Yeti. It will be alive when you enter the room. Fortunately it is quite slow, so it is enough not to fight with it in the room, but begin pulling back and shooting it. Of course you should also use one or two grenades. When the Yeti falls on ground, jump on it to kill it permanently.
In the room you will find two weights which are moving up and down. You can't jump on one of them just like that. You have to wait for a moment when one of them will be low and then recoil from wall and catch its upper part. Move to the top and recoil yourself in the direction of rotating metal bars. Clutch the chain which will be moving in this moment in the opposite direction. So you will have to press the button [E] rhythmically to get to the corridor safely.
Jump above the cylinders on the floor, crouch and move along the wall under moving cylinders.
Clutch the edge of the hammer. This time don't move on its side . When the hammer moves for a short while above the rest of the destroyed bridge, release the hammer and start running right quickly. You have to evade returning hammer and collapsing bridge.
Use the destroyed stairs to enter the next room and take the weapon from there which is able to kill the gods.