Changes

Get your AR33 out (should have 27 bullets) and take out the keycard guard and the AR33 guard + consoles behind him at the same time. Quick turn left and kill the left guard + console there. Now you might be out of ammo for the AR33 or low. Either way, take out the right console last. Head back up the stairs in left strafe and ignore any guards that might be here. Chances are you'll get hit once or twice on your way to Objective C/D room no matter what. Throw another mine at the top of the stairs and another along the right wall just after the drone gun. Use your last mine and throw it into the final hallway a bit to kill those 2 guards. Open the slow door and shoot behind you, but enough so no one is alert in the next room.  

Get your AR33 out (should have 27 bullets) and take out the keycard guard and the AR33 guard + consoles behind him at the same time. Quick turn left and kill the left guard + console there. Now you might be out of ammo for the AR33 or low. Either way, take out the right console last. Head back up the stairs in left strafe and ignore any guards that might be here. Chances are you'll get hit once or twice on your way to Objective C/D room no matter what. Throw another mine at the top of the stairs and another along the right wall just after the drone gun. Use your last mine and throw it into the final hallway a bit to kill those 2 guards. Open the slow door and shoot behind you, but enough so no one is alert in the next room.  

Have your ZMG out and charge for the radio in left strafe. You'll want at least 4 bars left at this point. Kill the right RCP-90 guard if you can and quick activate the radio. Over 50% of the time the room will blow up before you get to the radio, killing you or failing the mission. If you manage to activate the radio, chances are that the room will blow up as you exit. If it doesn't turn around and blow it up yourself. Right strafe and take the next left to enter the last leg of the mission. If you have 2 bars or more, run through the drones in a left strafe. Chances are you'll get through without dying. If you got under 2 bars left, shoot them out using the RCP-90 or ZMG if you didn't get it. For the first drone, stand just to the left of the two doors and shoot it out. For the last drone, stand on the 2nd door and shoot it out from there. Just be careful of guards behind you or the one straight up ahead so you don't get hit at all. The ending can be the most annoying part of the level. Don't be surprised if you die right next to the lift. It happens to all of us at some point. To be safe, run straight and shoot anything you see with the RCP-90 (ZMG if you didn't get it), or use a left strafe and injure the guards on the right. Either way, get into the lift as cleanly as you can. You should now have a sub-2:00 time for this bitch of a level.

Have your ZMG out and charge for the radio in left strafe. You'll want at least 4 bars left at this point. Kill the right RCP-90 guard if you can and quick activate the radio. Over 50% of the time the room will blow up before you get to the radio, killing you or failing the mission. If you manage to activate the radio, chances are that the room will blow up as you exit. If it doesn't turn around and blow it up yourself. Right strafe and take the next left to enter the last leg of the mission. If you have 2 bars or more, run through the drones in a left strafe. Chances are you'll get through without dying. If you got under 2 bars left, shoot them out using the RCP-90 or ZMG if you didn't get it. For the first drone, stand just to the left of the two doors and shoot it out. For the last drone, stand on the 2nd door and shoot it out from there. Just be careful of guards behind you or the one straight up ahead so you don't get hit at all. The ending can be the most annoying part of the level. Don't be surprised if you die right next to the lift. It happens to all of us at some point. To be safe, run straight and shoot anything you see with the RCP-90 (ZMG if you didn't get it), or use a left strafe and injure the guards on the right. Either way, get into the lift as cleanly as you can. You should now have a sub-2:00 time for this b*tch of a level.

*World Record Video

*World Record Video