De-Mask Us

You've been sent down to a hostile alien environment to recover samples left at a research facility, the toxic air requires wearing your standard issue INFO mask. But If necessary, there may be hazards that a gas mask can only protect you from. They don't know what has happened down there since it was abandoned, good luck. Your lucky Damascus knife handed down through generations might save you from whatever lurks below.

Controls:
WASD -> Movement
Mouse -> Look around
Q -> Change Mask
E -> Interact
Left Click -> Swing Knife
CTRL -> Crouch