Medical Facility--Part 1

Now that you're inside, clamber over a couple of gates to the far room, then bust into the vent on the right, which will drop you into a room with another vent you should trek through. It'll lead you to a split path, either way of which leads to one of several entrances into the large room. We suggest heading right for the quickest route, then grapple to one of the gargoyles overhead.

This room is chock-full of armed soldiers, so being stealthy is key. It's best to grapple from gargoyle to gargoyle until you have a good vantage point, then carefully watch the enemies below--as soon as one ventures away from the others (such as on the central walkway), glide down to him to and introduce his face to your foot with a glide kick, then promptly follow-up with a ground takedown. Once he's down, immediately grapple back to the gargoyles and continue to grapple from one to the next a few times to lose the attention of the remaining guards. Now repeat this tactic for the rest of them. That is, glide-kick one when he's isolated, perform a ground takedown, then return to the gargoyles and wait for your next victim. If you have trouble finding the guards, use Detective Mode to make them easily visible. With the room cleared, meet up with the doctors by the Morgue on the upper level.