Decadence

On the first floor, take out the initial loner, then throw a melee weapon at the enemy in the far north hallway.

Use a melee weapon to door slam one enemy in the south-east room and bash the other.

Enter the north-east room, melee one enemy, and throw your weapon at the one on the couch.

Pick up an assault rifle and eliminate the sentry in the west room.

Fall back and wait for the two patrolling enemies in the south to turn a corner before aiming your rifle at them.

Move to the second floor, grab a knife, and melee the guard in the north corner.

Wait for the patrolling enemies in the immediate south room to approach, then door slam the first and knife the second.

Knife the enemy in the bottom room to clear the east side.

Grab a shotgun and target the enemy in the center hallway. Shoot him from afar near the north pool table and take cover if noticed.

Use the same shotgun technique to eliminate the east sentry in the dining room, then the west sentry in the far corner.

Approach the enemies in the north-west room from the north with a shotgun, starting with the one on the couch, then dealing with the standing enemy if necessary.

Grab a fully loaded shotgun before proceeding to the boss.

The boss will emerge from his office. Target him and maintain distance, as it takes three shots to defeat him.

After defeating the boss, pick up the girl on the bed in his office and return to the car.