You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
I'm at the point where you climb through a vent into a small room with a valve you can open. When you open the valve the room fills up with poison gas and you die. Lara keeps saying the glass looks fragile, but I can't seem to find a way to break it. There doesn't seem to be another way out of here either.