Again, there is no need to kill enemies; just roll and you will pass them all. Make sure to roll up the stairs as well.

Unless you are using the one-hit kill cheat code, make sure to take this weapon on the left just before the pit; you will need it at the end of the level.

When crossing the pit, try to swing forward and jump on the first swing, because swinging more than once will waste time.

Tap Interact to climb the chains faster as well. Maybe it doesn't sound so important, but in Time Trials everything that will save even a few seconds is helpful.

NOTE: After jumping from the first chain to the second, you don't have to jump back to the first chain. If you climb quickly, you can jump directly from the second chain to grab the ledge, as shown below. –Stella

Once you are at this spot, there is no need to grab onto chain in order to get down. Just drop down; Lara won't take any damage.

As with climbing and traversing, always tap Interact while swimming in order to go faster.

There is no need to kill this jaguar, just avoid him and continue on. He won't follow Lara once she reaches the pounding block traps.

Roll through the first set of pounding blocks. Position the movable cage between first pair of blocks in the second trap. After that just roll forward between the remaining blocks. There is no need to move cage all the way through.

You can save some time in the room with the pressure pads and chains as well. Ignore the jaguar and the third crate. Just move the crate on the ledge onto the nearest pad, move the box under the seesaw up to the ledge and then onto the middle pad. (Note that you can use pistol fire to move the crates as well as dragging them by hand.) Then stand Lara on the third pad. The door will open and it won't close when you move Lara from the third pad.

Climb up on the left side and tap Interact to "Fast Traverse" when Lara is on the wall.

Also tap Interact while Lara is climbing along the chains to move faster.

There is no need to kill the jaguar in this room. When Lara is down just grab the spike device and continue on, you can also try to take a running jump from the entrance to land on top of the middle rack. Carefully move onto to the left arm of the rack and jump to the next rack ahead and to the left. Move onto the arm nearest the exit and jump to grab the ledge. This can be tricky though. It's probably safer to cross the "evil coat racks" the usual way.

Roll through this hall as well, since there is nothing interesting to do here.

The best way to get through this fight quickly is to use the secondary weapon, since almost every enemy will drop ammo for it once he is dead. If you haven't unlocked the one-shot kill cheat, make sure to use the "Aerial Attack" (i.e., headshot) as much as you can, since this is the easier way to kill them.

Finally, a few general tips: Sometimes timer in the corner can be annoying, if that's bothering you, try to cover it with a piece of paper. I found Zip and Alister annoying sometimes. If their talking distracts you, lower or turn down volume.

Bolivia Time Trial Part 1