Respirators

The Respirators (also Gas Masks) are special gear that Lara can find in The Angel of Darkness. Inside the Louvre is a case containing three respirators.

The case can first be seen in the Louvre Galleries level, that can not be opened until the Galleries Under Siege level, however there is a trick that enables you to get them earlier. Walk up to the case and crouch down. While Lara is about to crouch the hand symbol appears, press crouch and action and Lara will grab one of the masks. You can repeat this.

The respirators can be used underwater like an aqualung. When using the bug in the Louvre Galleries, they can be used in Neptune's Hall, giving Lara a big advantage.

Don't save underwater: Lara can breathe but she's not invincible.

When you get back to the Galleries Under Siege all respirators will be back in the case and can be picked up again.