You'll have to kill a lot of "ghouls" in this maze.
I suggest you start exploring from the right ;)
You'll eventually end up here:
Take the rock, and put it as shown. You'll be able to climb up.
Kill the ghouls.
Watch out, as the bridge will colapse. You'll have to jump forward when time slows down.
Now follow the images. They are detailed enough. I hope!
Kill some spiders.
Get on the moving weights, and at the top, jump backwards.
Grab the chain and ride it.
Jump on the hammer. Go to the right on it. Jump on the other side.
Again with the rollers. Jump over the first. Croutch. Jump over the last.
In this room you'll have to get the mechanism moving. You'll do that by going down, and getting the rock that's blocking it.
Kill some more.
Get the rock.
Use the rock to get back up.
Ride the hammer.
Grapple and go down, by using the ledges as shown.
Continue on your way.
Not far now. Kill that ghoul!
Use the grapple, to get to the other side.
Kill the troll (frost giant) by moving in circles around him and shooting. His kind of slow :D
Go to the rock on the right side. Chimney climb on it, by using the wall.
This chain is moving backwards. Once on it, tap the E key like mad while having the W key pressed. Lara will go faster.
Here the trick is not to let Lara spin on the rod. Just press space to jump over the rollers and on the rod, and then quick press it again so she jumps again, without spinning around.
Jump on the last hammer.
And let go when you are over the bridge. START RUNNING as it will colapse fast.
That is it for this chapter. Enjoy the cinematic!