A Daring Rescue

You'll start this very difficult level with no enemies to worry about, but plenty of traps. First, head to the spire on your left. Wait for the electric current to pass, then jump onto it.

Immediately hop onto the rail nearby. You'll need to switch to the next rail before you reach the end of the first one, as it leads to a deadly column.

From the second rail, you'll need to leap onto the cogs that are floating in the lava.

Climb up the pole you find there. At the top, use the hook to swing over to the lights.

Land on one of the lights and perform a spire jump to reach the catwalk that's near where you started.

As soon as you land on the catwalk, it'll fall, creating a ramp that leads down to a lower level. Don't step on the hatched floor you see; it's a trap that will shoot at you! Instead, hop onto the desk.

Carefully edge around the column, keeping an eye on the spotlight. You need to hit the trap mechanism, then quickly hop into the barrel.

Ride the barrel across the trapped floor and down the ramp. Turn right and sneak across the floor. You'll need to duck into the barrel whenever the searchlights pass over you.

Once you're on the other side, you'll need to disarm both the trap and the alarm system. After that, drop your barrel and hop into the tank. The tank will seal shut behind you, and you'll realize Bentley was right about this place.