Alright this is not to hard. But then again it is kind of hard. Do it on the "Wussy" setting. Just run and gun. The main thing that you will have to do to cut down on time is the first part with the elevators. When you get to the floor when the lift stops, wait for the montys to be on the same level as you (not running out of the door) as soon as there out just hop into the the red doors (push up on the L stick or UP on the D-Pad) so that way the lasers kill them. Then just move on. A few points you will have to actually kill everyone so do it and be quick about it. During the boss battle against MEGA-JONNY-5. Just destroy that little bot up top first. Then Just lug your gernades at the boss till there out then just shoot him (your gonna die qucikly no matter what) when you defeat him you will have to add another extra 5-7 seconds for him to die and the level to end. So make sure your have killed him before 11:51 just to be safe. Hope this helps.