Gears of War/Act One: Ashes

Knock Knock
"Gain Entrance to the House of Sovereigns"

Here you want to flank to the right and take out the Grenadier and get into the hallway. Take the Bolo Grenades he drops, you'll need them. Work your way around to take out the Troika Gunner, close the Emergence Hole on your way with your new found Bolo Grenades.

Once those waves are clear, enemies approach from the rear. Take them out with the Troika and then continue inside to finish off the Locust inside the House of Sovereigns entryway. Once inside and clear, Kim will open the door.

Hammer
Once inside the House of Sovereigns, you will hear some survivors of Alpha Squad having a good time fighting off the Locust. As you approach you notice it's a lone squad member of Alpha Squad and he needs help. Ward off the Locust to save him, his name is Augustus Cole. He tells you of the radio transmissions being jammed by the Seeders and the rest of his squad is off safe in Tomb of the Unknowns.

"Destroy All Seeders"

You reach a door you need Jack to open, so he de-cloaks and begins his work. While he works the squad is attacked by a large group of Wretches, they come from both sides so be sure to find a safe yet open spot.

After you progress you will find the new weapon, The Hammer of Dawn, this weapon will be used against the Seeders. As you walk outside, you will find your first seeder. Focus and hold the Hammer's beam on the Seeder to toast it. Then feel free to use the beam on the remaining Locust.

As you progress back into the house, you will find another Seeder to take care of. Let your squad exterminate the Locust while you finish off the Seeder with the Hammer of Dawn. If you dropped it since the last Seeder battle, there is another to be found in the room.

After that Seeder is eliminated you can call up Anya to let her know your status on attempting to reach the rest of Alpha Squad. The communication is not great yet, which means a Seeder is still in the area.

Wrath
Clear through the Sanctuary here and reach the third and final Seeder. Take it out so you can get in touch with Anya and Alpha Squad. You find out that Alpha Squad is okay, but currently pinned down by Troika's on the rooftop of the House of Sovereigns.