After a continuation request for another Snp Challenge (you can see the first one in the map vault...check my profile). The main story is in my journal but you can look at it here too.
After making it out of the tomb you are picked up by a combine patrol...not knowing what to do with you they throw you in an old abandoned jail that once was owned by a rogue combine who was story crazy...he had 1 way to get out but to do that you have to activate a series of machines and accomplish tasks (get gas, turn on pump etc...)
You will start in your jail cell...door unlocked and you have to find your way out smile - Sound good??
Here are some pictures for ya
Original Image
Heres lightened image (photoshopped) for those of you with darker/crt monitors