Mission 2: Kobin's Mansion
Infiltrate the mansion and find Andriy Kobin
Once on the streets, move through the crowd toward Kobin's mansion. The mansion is surrounded by high walls that are topped off with rows of pikes. Climb up the first portion of the wall that is bare and pike-free and perform a Death From Above on the guard in the blue shirt here. Proceed to climb up the wall and shimmy to the first window on the right. Grab and pull the guard to his unfortunate demise and climb inside the building.
The first door in sight leads to a single guard whose lax security allows Fisher to just creep on by into the next room. The next room, however, features a pair of guards and a third one that patrols just outside the room. Execute these guys and takedown the guy in the hallway. The gunshot may draw one more guard to the scene, so take him out as well. Otherwise, proceed along toward the double glass doors and head inside. Raid the Weapon Stash as you wish, and when ready continue into the next room.
The first thing of note is the overwhelming number of sentries stationed on the bottom floor of this area. Creep along the upper floor toward the pipe at the end and climb the pipe up. The pipe extends up and across the ceiling, positioning Sam directly above a hapless individual. After knocking the guy into a coma, it's time to get to work.
Find Andriy Kobin, your daughter's killer.
Traversing this guard-filled room can be dangerous and loud business if you neglect to utilize the innumerable diversions around the room. Take, for example, the car alarm, fire extinguishers, and the author's personal favorite, the enormous ornament suspended from the ceiling. After getting the drop on the first guard from the pipe, ascend the stairs and hop over the railing to bypass the single sentry patrolling the upper floor. While staying under cover of shadows, shoot the base of the dangling ornament to pry it loose from the ceiling. Ideally, you'd want to wait until there are people underneath it, but even if that's not the case the ensuing ruckus has everyone on edge. Execute where needed, or snipe the stationary guy near the door. If there are people left alive, make sure to douse out the lights surrounding the exit point to avoid detection.
At this point, Kobin is very well aware of Sam's presence in the building. Despite his bravado, Kobin is absolutely terrified, as he very well should be. Inch into the room to discover a handful of Kobin's men already in search of elusive intruder. Hang a left, toward the pipe, and climb it to freely navigate around the room above the unsuspecting guards. Shimmy over to the northwest area of the room and peek under the door here. If the coast is clear, head in, quickly close the door, and find safe cover. More guards keeping a diligent watch perform sweeps throughout the room. Climb the pipe here and work around the room, taking people out as needed like a silent ninja.
Ultimately, you want to reach the room up ahead with the Weapon Stash. Go up the stairs and follow the path to another pipe. This one props Sam up on a window's ledge that opens up the opportunity to throw the guard here out the window.
Kill Andriy's guards and interrogate him.
After putting one guy out of commission, there are two left to deal with, and they stand idly by the base of the main staircase. Perform a simple Execute here and continue on towards Kobin's door. Like a cornered mouse, Kobin begins to bark orders at his men to kill Sam on sight. Don't be tempted to bash open the door and go in Rambo style (unless that's your thing). More discreet opportunities of infiltration arise if Sam takes the window route instead. Peering through the various windows, you can easily see that getting by undetected among a sea of Kobin's men is a rather tall order. While it's possible to silently abduct Gramkos, the guy in the back center wearing blue, the game requires you to secure the area before any legitimate interrogation can commence.
The slightest twitch will drive Kobin into a frenzied fear, causing him to fire his gun with reckless abandon and making his men be on high alert. A good way to avoid a bloody firefight is to attract the guards' attention while hanging from a window. When they become suspicious and investigate, grab and chuck them out the window one-by-one. Execute any remaining guards, then quickly approach Kobin from behind before he whips around to find Sam lurking over his shoulder. Interrogate him with the methods Sam knows best to ferret out some information, but some unforeseen circumstances cut the interrogation short and leave Sam at the mercy of some new company.