Act I: Knock Knock/Hammer GoW(PC) Guide

After a short scene, go outside. Turn left, go past the rift and get the 7.Tag. Now go towards the fountain. There's another Troika post here - to capture it, go right, as close as possible to both the barricade and the entrance. A huge shotgun-lover appears. Shoot him down as fast as you can. In the corridor kill everything that moves. The post is yours.

Another scene and another Locust attack. You can fight them off using your Troika gun or by reverting to the usual methods. A door will open but don't go inside yet. Take your position in front of it and kill two enemies inside. Now you can go through and shoot down the creature lurking near the right side of the hall. Another door will open after a short conversation

Get upstairs and inside the big hall. You'll get a chance to observe some fighting from your vantage point. Wait till one of your companions opens the door. Get inside and downstairs and finish off remaining Locusts. Follow your teammates. After another door opens, turn right in the corridor and get the 8.Tag. There's a shotgun on the other side of that corridor. Take it. You'll be attacked by ceiling-walking Wretches - just shoot them down with your shotgun. Go forward.

Take Hammer of Dawn off the floor. Don't go outside yet. Look through the window and aim the Hammer you picked up at the Seeder (the big one). This way, you'll kill it taking no risk at all. After the drawbridge falls, finish off everything moving in your vicinity and make your way towards the place the Seeder was lurking in. Cross the river and go through the door one .of your people opened for you. Follow your team till you meet another Seeder. Destroy it the same way you killed the first one - using the Hammer. Just take care not to get minced by those Wretches running about. Turn left and go downstairs. Kill two Wretches on your way and another few in the chapel. In the room you found Rojas' corpse in, get 9.Tag (right side, in the small niche) .