Complete 'Clean House' without being hit using one bullet per threat.
Achievement/trophy voids if you do the following:
1. Get hit by a bullet
2. Using more than one bullet per threat.Ground floor
1. Let your teammate tie up the woman coming into kitchen (don't shoot her).
2. Headshot middle guy, let woman grab gun and kill her, let third guy grab gun kill him.First floor
Headshot the hostage taker first, shoot hostage after she grabs gun. Let guy run out of bathroom, stay close to the door and shoot him as he runs out.Second floor
Let the enemies down ALPHA 3-2, shoot guy behind door, then another one coming from left door, throw a flashbang to stun guy on room, on right side. and shoot him.Third floor
Look at woman with baby, don't kill her, In second room aim under bed to shoot guy in head.Final floor
When Capt. Price says "Drop her," do so now before he does, but not too early or the mission fails. If Capt. Price kills her, reload last checkpoint to try again.
Achievement/trophy pops when done correctly.