Decadence

You'll start on the first floor. The enemies here are pretty bunched up. First, take out that lone guy near you. Then, grab a melee weapon and chuck it at the dude chilling in the far north hallway. Now, grab another melee weapon, use the door-slam trick on the guy in the south-east room, and bash the other one. For the north-east room, burst in, melee the first guy, and then throw your weapon at the guy on the couch.

Next, grab one of those assault rifles. Use it to pick off the sentry in the west room. After that, fall back a bit. Wait for the other two guys to round the corner from where you're aiming the rifle.

Head up to the second floor. Grab a knife. Use it to melee the guard chilling in the north corner. Keep an eye on the patrol guys in the south room – when they get close, door-slam the first one and then knife the second. Finally, knife the guy in the bottom room to clear out the east side.

Now, grab a shotgun. Target the guy in the center hallway. Shoot him from a distance near the north pool table. If anyone spots you, just take cover. Use this same tactic for the east sentry in the dining room, and then the west sentry in the far corner. For the guys in the north-west room, approach from the north with your shotgun. Take out the one on the couch first, and then deal with the standing guy if needed.

Keep an eye out for the PUZZLE PIECE: "O". It's on the right side of the dining table on the second floor. Don't forget to grab it!

Before heading downstairs, make sure you grab a fully loaded shotgun. You'll need it.

The boss is going to pop out of his office. Keep your distance and target him. He's tough, so one shot won't do it – you'll need three hits to take him down. After he's down, pick up the girl on the bed in his office and head back to the car to finish the level.