Start out just after activates the crate, and that it is shown. Strafe into the elevator which is closing. You shouldn't get shot at. At the top, turn left, and kill the guy near you. Look at the end of the ramp, your gun (Falcon 2 silencer, not dragon for now)will aim at one of the two guards. Kill him. After that, go ahead, killing the next one. Don't pick up the 2 dragons yet. Throw a proxy dragon in the left corner near the door, pick up the dragons, and head to the next elevator, which should just be opening if you're fast enough (and you need to, so practice :) ) Now, go on the right side (from where you got in) near the door. Crouch twice, and throw another proxy dragon. Wait a little for the elevator to go up. As you begin to see the next floor, shoot it so that it explodes, killing all four guards (if you're lucky enough). Kill the remaining guards while exiting, again, picking up a dragon to throw as a proxy at the wall. After the explosion, look to your left, if a guard is there, kill him, if not head right and up the ramp. There will be at most two guards there, kill them with your falcon 2 silencer.Pick up the superdragons, set to grenade launher. Go down and kill the 2 guards near the doors. Switch to normal mode, and shoot the right door leading to the showers if your timer is around or below 1:13. If it's higher than that, shoot the left door, and if it's higher than 1:23, restart and practice the beginning a little more. Go in, kill the scientist, put your X-Rays on, and get the lab clothes. Put them on. OBJECTIVE 3 completed.
Now exit and head back up the ramp. In the middle, go to the door on the left, punch out both scientists, and start downloading the information. After that, exit and continue going up, disarming the guards on your way. Switch to superdragon (grenade launcher) and at the intersection, go to the door on the right, kill the two guards and the scientist here, then destroy the computer in the back of the room. OBJECTIVE 1 completed.
Again, switch to unarmed and head down the next hallway, disarm guys as you pass them. Head to the very end of the hallway, and to the right containment lab. Open the first door, punch the guy from teh back, then the biotechnician. Activate the left switch, take out once again your X-Rays, and complete OBJECTIVE 2.
You know the drill for the rest of the level, do as same as on Agent/Special Agent, except that after getting the first card, shoot some grenades at the biotechnicians and guards coming at you in the first lab. You should still have lots'o health left to run through the rest of the level, probably even getting to the end unscathed.