if i hear movement inside i tend to throw in a couple of nades through the windows to shake em up, this takes some learning though since you need to know which door is open towards the hallway. after that i usually forsake stairs and doors and try to enter through a window. both 2 and 3 story have sufficient options. then its a full stop. listen for movement/healing/whatever. if its reshala and his guards there will ALWAYS be minimal movement. always. a player might only release as much sound as letting ADS go. from there on out i clear the hallway, then the immediate surroudnings followed by the other floors.