... SEE BUGS BEFORE YOU PLAY THIS LEVEL! ... He found a gateway between time, a "Time Slip". This allows you to travel back in time, and then come back to where you began, walk into the time slip chamber, press the button, and ZAP! you're back in the present. ... Yes, bullet holes appear like magic! ... So, if you clean out Interius, the labs, and then slip back to before Adam and Eve were created, kill the assasins that will slip in and then leave back to your base, things will be as they were. ...