When the guidos come back and the lady starts yelling at them, be ready to shoot. You'll take cover on the left side of the room and then have to move into the pool room. Move up slowly because there are four enemies in here including one up the stairs. Try to take out the ones on the button floor from a distance, then climb the stairs with Bullet Time (if you need it) to take out the gunman upstairs. Kill him and check the hallway behind him for a piece of the Golden 1911. Head back downstairs and head towards the front door of the bar. Just to the right side of the bar will be another part of the Golden 1911.
You'll come to a lower bar area that's kind of beat up and Passos will take cover behind a brick wall to the left. Follow his lead. There are three enemies in this room and likely one in the next room that can hit you through the window over the bar. You can likely take out the three gunmen with a single Shoot Dodge and land behind the bar in cover. Kill the man through the window and then move into the next room through the door at the back. You'll likely find two more enemies here but it's very narrow, allowing you to pick them off easily. Go through the next door to get outside.
Take a quick breather behind your cover and survey the five guys behind the two cars. If you are quick and good, you should be able to catch all five of these guys with a single Bullet Time but it's not easy. Note that the windows of the cars can be shot through so if they seem to be behind cover, make use of this and you should have a good shot if not a clear one. Killing them will bring a couple more enemies through the gate at the back. Before going through the gate, head back down the stairs towards the bar and check under the stairs for the last part of the Golden 1911. Now follow Passos through the gate.
Passos will set you up at a corner in the alley and you'll need to keep the enemies busy while he goes up over the roof top to flank them. Kill the guys behind the cars and work your way up the alley using the dumpsters and cars for cover. After you've cleared these guys out (pretty easy, plenty of cover), you'll make your way up to your apartment.
Before you come out of your apartment, look around it for a shotgun by the door, your NYPD Badge on the table by the couch, part of the Golden M500 on the floor, and Painkillers in the bathroom. When you go to leave your room, you'll be confronted by two enemies. Kill the two of them and then you'll be shot at through the windows. There will be five or six enemies on the roof across the street. If you kill them all and possibly a third enemy at the end of the hall, you'll get an achievement. However, it's tough and will likely cost you some pain killers (diving may be helpful). Watch Brewer help you and then head into his room. You can watch the TV if you'd like but you don't get anything for it. You can also find a notebook not far from the TV and some clippings on the wall by the bathroom, both of which are clues.
*Achievement: That Old Familiar Feeling
Leave his room and make a mad dash down the hallway that he just destroyed. At the end, turn right just before going up the stairs, check the blown out room to the right to find part of the Golden SAF 40 Cal. Go up the stairs and kill the two goons on this level of the roof and then try and get angle on the third to the right. Once the three are dead, go back behind the door you came out of and behind the wall will be part of the Golden M500. As you approach the spot that the last enemy was at, you'll be shot at from the left. Go over to the lip of the roof to take cover and then take these three enemies out. Vault over the lip and make your way across the roof. You will come to a part of the roof that slopes upward.
In this area, you will be ambushed. Just to the right before the sloping ramp will be an exit to the building you are on. Just around the corner of that will be one enemy and then there will be three more. Unfortunately, there isn't a whole lot of good cover here so your best bet is likely just to do a Shoot Dodge towards them and try to take a couple out. It may even benefit you to run straight through because the ramp can provide cover in some ways. Kill the enemies here and climb the ramp.
You'll find yourself attached to the top of a water tower that falls over. Five enemies will see you and you need to kill all of them before you fall all the way or else you'll die. If you feel comfortable, go for headshots on them or just put 2-3 rounds in each one (infinite ammo) and just make sure you watch for the kill indicator (looks like the hit marker from CoD). It may take a couple of tries to get it but you will get it. Once you have control, go left (instead of right) and at the end of the roofs behind a wall will be part of the Golden SAF 40 Cal. Now head right and you will climb across some more roofing and then make your way into a building through the husk of a water tower.
Inside, you'll be confronted by six or so enemies. Clear the area at the front of the next room and just behind the stack of wood. After that, move up to the stack of wood and clear out any survivors. Some of these enemies will be dropping Assault Rifles that are very effective. You may want to take one if you don't have a two handed weapon.
When you go upstairs, you'll come to another firefight. There will be four enemies. One will be towards the middle of the next room, there will be two in that room in cover and one behind cover to the left. Make sure that you check the scaffolding just behind where they were. At the end of the scaffolding will be the last part of the Golden 500. Now go find Passos on this floor by a fire escape. You'll make your way down the fire escape and onto an adjacent roof.
You'll drop into a chop shop below and have to fight off a group of a dozen enemies or so. Since your cover is so narrow, it's important that you watch your flanks, particularly to the right. It's common for an enemy to move into the office and attack from there. He'll do a decent amount of damage before you can kill him. Other than that, just keep picking off enemies as they come at you. They won't be shy about being aggressive. After the initial group of about six guys, another group will appear in the street for you to fight. If you are prepared, you can trigger Bullet Time just as they come out and probably catch a few before they find cover. After you've cleared the shop area, check the office attached to it to find the last part of the Golden SAF 40 Cal on a table. Go into the lot where those enemies were and follow Passos through the gate.
You're now in a fence heavy back yard area. The enemies will flow in from the back left area and since you have help, it's best if you push up the right side quickly and take cover behind the couch or something similar. Just be careful because frequently, one guy will beat you to it. Kill him and you should be pretty safe there. Just be aggressive because your cover won't last forever. Once you've killed everyone, the chapter will end.
