How To 

How To Beat Mission 17 Protecting the Future

If you choose to save Brown and the delegates, then you can ignore mission 16 completely and focus on this one for now, unlike the choice of which mission to do with either 11 or 12, you do have time to do both of these missions.


Step 1)Find the delegates.
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You have about ten minutes before Marchenko will detonate the bombs, but if you saved Allison earlier in mission 11, you'll have even more time, because you'll have the bomb diffuser which will prevent him from detonating his bombs. If you have that, it's best to save the delegates first since they will become poisoned in those ten minutes, and if you have the diffuser, you won't have the antidote. Head through the door you didn't come through and make your way to the elevator at the end to stop the delegates from drinking the poison champagne. The first hallway you end up in is going to have a turret and several guards. If you can manage to sneak behind the turret to the terminal behind it, you can actually turn friendly fire on and watch it gun down several of the terrorists while you can continue on your way to save Brown. If you gave Rucker’s evidence to Alex, the backtrace they did on the IP will light up with a brief connection, and a message will be passed that includes the password for the door to the meeting room: 2202. You'll need to get to the heavily guarded elevator to get to the delegates though. Utilize either your stealth skills, or gun your way through them, it's up to you how you do this.


Step 2)Enjoy the ending!
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If you've already stopped Marchenko, then you can sit back and enjoy the ending at this point, it's been a long trip and you've earned it. Stay tuned to the news broadcast and you'll see a summary of all the side missions you've completed being reported on as well, it's interesting to see how Picus spins the stories so horribly wrong.


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Step 3)Stop Marchenko.
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If you haven't stopped him already, it's time to run back the way you came, if you brought down the guards on the way to the delegates, this will be smooth sailing, but otherwise you'll have to sneak back past them. You're heading all the way back to the party where you took out those guards quietly to continue. Marchenko has made sure there is nothing between you and him to slow you down though, how nice of him. He's more interested in facing off against you himself. When you do get to him, he doesn't exactly fight fair though, he'll have several police drones buzzing about that you'll have to either deal with or avoid. I found the best way of dealing with Marchenko was to toss out an EMP mine on a surface you know he'll be walking past eventually, and being patient. When he does eventually walk over the mine, charge in and perform a takedown on him and you'll now get to enjoy your ending without having to deal with those drones.


Your choices up until this point in the game will determine what kind of ending you get, and your choices up until this point will also be laid out to view. Also, keep an eye on those credits, they've hidden a cut scene in there which will reveal some hidden loyalties of a certain doctor.