Mission 6: White Box Laboratories
Infiltrate the building and retrieve any intel you can find on the EMP testing.
You have the option of rummaging through the Weapon Stash to swap out some weapons when the mission begins. Our advice would be to keep the Five-Seven as a mainstay and upgrade it fully. It should now be able to mark a maximum of four targets for Executes.
The mission starts off rather innocuously--only one guard to drop until the next objective. This one sits out in the toll booth and ambles back and forth from booth to a few steps outside. Since he faces Sam's general direction, you should be careful to avoid sprinting toward him. Stay crouched, shoot out the street lamp to the right and follow the fence along to the booth. Get a good bead on the guy's head and put him out of his misery. The trek across the parking lot is pain free, but aim for the pipe on the far left side of the building.
This is the start of a rather long climbing process. Basically, move Sam from rooftop to rooftop, pipe to pipe until he breaches the interior of the facility.
Access the building's monitoring system in the security room to discover where to look.
Vault over the large pipes and descend toward the security room below. En route, Sam comes across many laboratories occupied by working scientists with only a clear-viewing glass and sparsely lit surroundings separating them. It may be easy to be seen here, so remain crouched and cautious. A peek under the door at the bottom of the stairwell gives you a good indication of not barging in through the door. Instead, climb up the orange pipe nearby to gain a crystal clear view of the opposition. Looks like three guys total, most likely armed.
Mark all three and prepare to Execute immediately after a Death From Above to avoid further alarm and harm. Examine the security cameras afterward and scroll through numerous footage of different areas until you land upon one that lets you witness a troubling scene between some working scientists and Black Arrow.
Question the remaining scientist in the machine shop.
Follow the path out and jump through the window into the machine shop. Immediately tip-toe up the adjacent stairs to get an idea of the floor plan and the number of guards: five. The scientist is being kept under close supervision, but the pipelines and spatters of shadowy places provide ample wiggle room to work around the tight security. The stairs also lead to the pipe start point on the other side, opposite the window. Climb this pipe and shimmy across the room to the upper left near where the pipe leads downward again. Here wait for one of the guards to stand beneath Sam, but before conking him on the head be sure there are no watching eyes in the vicinity. Alternately, the first guard that patrols in near the window can grant the Execute needed to take out all four remaining guards, assuming you maxed out the Five-Seven pistols.
Speak to the quivering scientist to glean some needed information. The very cooperative scientist activates the elevator for Sam and directs him where to go. Hop on and ride it to the next floor, where Sam is greeted by a morbid scene. Approach the Weapon Stash for the Sticky Camera gadget, which can be quite useful.
Reach Robertson's office and download the EMP data from his console.
There are two options: double doors or the single door along the left side. The double door leads to an unnecessary direct confrontation, whereas the side door leads to windows that allow Sam to skirt danger and put a devilish plan into action. Shimmy across the windows and stop at the one with a guard standing just in front of it. Open the window and proceed to mark every guard in the immediate area--totals four, not including the oblivious one by the window. The fourth one wanders close by after executing his prisoners in cold blood. When ready, toss the guy out the window to charge the Execute and pick off his four friends before they have a chance to react.
After cleaning house, climb inside and proceed through the building. The next sentry is at the top of the first set of stairs, where the text for your objective shows up. In place of climbing the steps and risk being seen, climb the pipe next to it very quickly. The guards here may catch a glimpse of Sam, but not enough of him to go on full alert (though that may depend on which pipe he climbs since there are two next to each other). Utilize the mark and Death From Above strategy to take care of the security on this level in quick succession.
Next, find a pipe leading up to the next floor and climb it, being wary of the hawk eyes watching the floor. Move to the far left, haul Sam up and over when the guards look away, and then very quickly vault out the opened window. Shimmy across and aim for the door ahead. Once inside, be cautious of one of the guards outside the viewing window, as he can easily spot a careless intruder. Raid the Weapon Stash and continue through to get in brief contact with Grim. Grim coldly ends the sentimental reunion short, reminding Sam that he has work to do.
Open the nearby door to find a guard on patrol duty. Don't worry, though--he can't see Sam in the dark. Creep toward the window directly opposite the doorway, open it, and climb outside. From here, you can choose to wait patiently to pull curious guards out the windows and then Execute the other guards. Or, if you want to play the risky card, head to the very last window and climb inside, making sure that Sam is bathed in darkness as he inches toward the window to the left. Quietly open the window here to end up back outside and next to a catwalk. Move away from the doorway and then climb up. Climb the vertical pipe here to the end and drop down.
Be quick to find cover upon landing, as a patrolling sentry is about to make his rounds here. There are a few options here: climb up the metal-grated girders and get the drop on the patrolling sentry, and then Execute the other two; or, hop back out the window and shimmy from window to window, finding the opportunity to toss the guard out the window during his patrol. One thing to take note of, however, is that the lights on this floor s sense motion and flicker on whenever there is movement. In one fast minute, the sanctity of darkness can be stolen from you. After rounding the corner, quickly jump up and climb atop the metal-grated girders here. Below are four more sentries. Now's a good time to target all four and then Death From Above one to take them out.
Moving on, Sam comes to double doors and a window. If your gut feeling is telling you to take the window, then your gut feeling is right. Just beyond the door is a handful of soldiers that are ready to rumble. Jump out the window and shimmy all the way around to the balcony. Blast off a Portable EMP charge and make a run for the vertical pipe across the room. The pipe should lead right into Robertson's office, where Sam opens access to it for Grim.
Defend the console until the download finishes.
By now, White Box security has learned of Sam's presence within the facility and is working to evict him--whether dead or alive. While Grim downloads the data from the Robertson console, Sam must keep all of the incoming guards at bay and away from the data. Each wave of security personnel arrives on scene in 20% increments, or as soon as the current wave has been subdued. Hang from the pipe to remain safe and out of sight. The first wave comprises only two guards that emerge from the elevator. These guys go almost straight for the console and if left alone for too long will botch things up for Grim. Deliver clean headshots to each guard to open the floodgates for the next wave. They should start coming in groups of three now. Mark every guard and Death From Above to take care of all enemies, then scurry back up the pipe. At about 80% completion, there are five guards to deal with. Mark all that can possibly be marked and focus on performing a Death From Above on the unmarked man to get all the bases covered. Deploy a Remote Mine if you have extra.
Get to the weapons lab and stop the trace before Grim's cover is blown.
Grim finishes leeching the data, but she discovers a trace originating from the first floor of the White Box laboratories. Find this culprit quickly! Head down, using the various rails and pipes to descend. Once Sam lands in a bright room and heads into the weapons lab, run straight ahead toward the opposite wall. Hop on the vertical pipe to gain the first advantage over the incoming swarm of enemies. Use the usual Death From Above and Execute combo on the guys at ground level, which then leaves three more guards in addition to Robertson on the upper catwalk by the EMP control. Roll a Frag or two over to the remaining guards and approach the EMP control to fry Robertson.
The final task is to escape, but nothing ever comes easy for Sam. More enemies flood in from outside and must be dealt with before he can leave White Box. Deaths From Above and Executes again never fail, letting Sam be on his way and run across the parking lot.