Use Arrow Keys to Navigate
Scroll over moving things - if target appears, you can kill 'em
Click targets to kill 'em - it won't make you a better person
Click objects to pick 'em up (if they can be picked up)
Click places and windows to go to them
Press enter to use objects
The head is watching you, there's nothing you can do about it.
Enable flash and repost this on every video or you will be haunted by 3 Catmen.