Deadfall Adventures

Inside the Sakkara pyramid, you will come to a room that appears to be a dead end. Jen will fall through the floor and you will follow when you attempt to pull her up. After sliding down a tunnel, you land in a large room where a handful of Nazi soldiers are being attacked by mummies. You need to kill everything in the room before you can progress.

Walk through the doorway that is directly across the room from where you landed. You come to a cross-roads in the corridor. Head left and melee/shoot the planks that are blocking the doorway. Go down the stairs and, at the bottom, is a scrab beetle treasure from the Path of Light. As soon as you pick up the treasure, the corridor starts to fill with gas. Turn around, sprint back up the stairs and go through the doorway. As soon as you're through the doorway, the achievement will pop.

Hey everyone, just a quick video for unlocking this achievement Hold Your Breath. All you need to do is grab the treasure in the area after you slide through an area in the pyramid, you come to a four way section. If you go left, you'll see a boarded up area. Clear the boards, then grab the treasure and get out before dying. Simple as that, hope it helps!