Well, I use a whole different strat than Paragon. But however:
Stop the movie at 'out to us'. Then switch immediately to unarmed and punch the guard left of you, then the 2 guards who are standing still. (for the grenades, now you should have 3 grenades) Then: run past everything (drone guns and the guys in the tower). Now quickly grab the Rocket-launcher. And go into the hole. Shoot the guards in that area (2 of them). And the drone gun on the wall. Quickly switch to Grenade proximity pinball, throw it to the Robot interceptor. Now switch to grenade 4 second fuse. Plant the explosives, but before throw a grenade in the corner of the room. Then quickly plant the explosives and grab the keycard (where the robot interceptor is exploded). Now go back to the place where you should place the comms rider. Grab your Rocket-launcher and shoot the Drone gun, but WATCH OUT for every guard there (extreely dangerous). Grab your Falcon 2 and kill every guard in that area. Do it not too fast or you got killed. Destroy the 2 robot interceptors. Then push the green button and throw the comms rider on the antenna. Now: RUN AWAY for the guards that are coming. Go to the elevator (through the hole). Go into the hangar lift with the 2 people inside. Now double crouch and shoot them (be sure to shut the elevator behind you. Now it's getting pretty risky. But if you want to get a good time you must ran past all guards. But shoot the guards on your way and watch out for grenades. Run like a madman to the last elevator (If you're lucky he's open). If not it doesn't take too long for he comes down. If you come out the elevator shoot every guard (I prefer with the Falcon 2) and run very hard to the end ('This isn't to difficult) NOTE: My time is 3:42