Board Thread:Questions and Answers/@comment-23371555-20150814175022/@comment-26955746-20150814220218

Okay, I thought so. That's going to be really tricky to do I think. First, it'd be a good idea to hack any alarm panels and disable them so none can be sounded. Take out the guy near the door and the two near the elevator to the morgue since that can be done easily. Then, go to where the stairs down to the morgue is and shoot a weapon a few times to attract people's attention. Sneak down the stairs a bit and hide. It might be possible to wait for each person to walk down one by one and take them out. Then once all the police are out of the way, go back up and take care of the civ's.

Obviously, this suggestion involves people being alerted to your presence which is probably the sort of thing you wanted to avoid, but I'm not convinced there's another way to do this. It's a tricky one since none of the people in the main room with the computer's move unless alarmed. You might still be able to knock everyone out without them turning hostile (rather than just alarmed) though, which would still be cool. I haven't tested this idea so it's possible there are some unforeseen flaws that'll mean it won't work.

Alternatively, if you have Cloak and a tranq rifle (better to do it at a distance so you can hide more easily afterwards), you might be able to take out everyone one by one but this will again alert everyone else once you knock out the first person. (the second floor balcony would be a good spot to do this from). Let me know if you get anywhere with it though!