Move right and drop down into a pool of water. You will see a giant mosquito feeding on a dead body to the right. Any sudden movements will scare the mosquito away, so move very slowly towards it and as it spots you, jump at it to grab its legs. It will fly off and deposit you on a higher platform.
Continue to the right. You will come to a ramp with a pressure switch beneath it. Climb this and drop down the other side, climb the ladder here. On the ledge, push the box beneath the ladder and climb up to the next level.
To your left you will find a pair of hanging platforms that you can move. Jump over the first one and pull it as far as it will go to the left. Jump over the second one and throw the switch at the far left. This will release a tyre which will roll slowly to the right, we need to carry it across on the hanging platforms. Quickly run back to the right and jump over the first platform again, push it as far to the left as you can. As the tyre rolls, you need to pull the platform along with it so it doesnt fall into the pit below. When the tyre reaches the second platform, switch over and push that to the end. The tyre will drop down below.
Cruise back down the ladders and into the room with the sloped ramp and the pressure switch. Push the tyre up the ramp to the left as far as it will goand quickly run back over to the right and scale the first ladder. As the tyre hits the pressure pad (and this will happen a couple of times, so dont fret if you miss the first one), a small section of wall will open, allowing you to push the crate here down to ground level.
Grab the crate and drag it to the right.

