Chamber 3: Camera Control

You'll start off with a camera watching the exit to your right. Don't just run for it! Instead, jump out and then immediately jump up to grab the ledge on your left. Grab the next two ledges as well. Once the camera loses track of you for a bit, it'll unlock the way forward. You can then jump off the ledge, go over the camera, and reach the terminal to hack it.

Now, run straight through the camera's line of sight. Jump back up to the top of the room – the door should be unlocked by now. Jump across the gap and drop into the next corridor. Keep running past the next camera, staying in the dark until it can't see you. This will unlock the metal panel in front of you.

Drop down the tunnel, and then do the same into the gap on your left. You'll see a couple more cameras ahead, plus these four blocks spinning in a circle. They create moving shadows, which is exactly what we need. If you're not worried about the S-Rank, you can grab the [Helix] right here. The trick is to match the speed of these moving shadows. Time your jumps and movements so you're always hidden in the dark as you pass through each camera's cone of vision. It's a good idea to pause for just a second between each camera to catch the next shadow – they move a little faster than you can run.

Climb up the ledge here. Stand on the far left side to activate a lift that'll take you back up to the first room. Head right and time your jump to the ground so you're still in the shadows when you reach the camera's vision cone. Nail this, and you'll reach the exit while keeping your 'Spotted' count low enough for that sweet S-Rank!