On the mission where you start near an office, and you have to go to a basement and the top floor, which represent heaven and hell, bring a sniper. start by tranquilizing the guard who goes to look for your briefcase after you ask him. tranq the other guard, take their clothes, go down the stairs. At the bottom of the stairs, safely behind the doors, unpack your rifle, hopefully you upgraded it well. Shoot both heaven and hell guards, and the poilce guard by the access door to the elevator. Dress as the hell guard and go down to the basement, go down to the end of the hall and into the service hall, turn right and rig the pyroshow through the computer by the door to the stage. Run back to the parking lot and dress as the heaven guard, go to heaven, turn right and go to the restricted area, kill eve when she walks into her office on your right, get the data off her computer, and then climb the hatch on the elevator, wait for the CIA agent to get on, then fiber wire him through the hole in the ceiling. Go to the bottom floor, then to the basement and duel with the red skinned guy at the bar. During the duel just hide behind the shelves and shoot him through the fence early in the duel, It'll end faster that way. once you kill him, head for the lot and find a van, that's your escape vehicle.