The CQC special forces has been send to a secret lab building without clearbriefing, something must have gone very wrong inside the building.
controls :
Press on the ASDW keys to move around, use the mouse cursor to aim and fireon your targets.
Press on the 1,2,3 to switch machinegun mode, press spacebar to use grenadelauncher, press the E key to perform an action (pressing switches,picking up items etc).