Dodging a Fang

Before you continue, grab the emerald from the pot that is hidden behind some foreground leaves.

Head to the lower area. Make your way to the first saw blade path. Before you head over to the lever, grab the Twin Snakes fragment from a hidden pot behind the stone structure.

go to the lever and flip it. to move the brown platform.

Make sure the saw blade is on the platform. Move once to get the saw blade off the platform and go back. Hit the lever to move the platform again so the saw blade goes into the left most slot of the platform. Hit the lever again and move up to get it off the platform. Now head over to the now clear route to the spear. Get it and immediately throw it at the snake.

Make your way up the elevated area to get the spear and get the emerald from the pot at the right side of the screen.

Align yourself with the snake and throw your spear at it. The way is clear towards the exit.