There are a total of 6 Koskela Brothers Commercials you can find scattered throughout the Alan Wake 2 game. You can find and watch these commercials while playing as Saga.
Once you watch all commercials, you will unlock "The Koskela Brothers" achievement / trophy.
Adventure ToursChapter: Return 1: Invitation. A small TV standing on a shelf mounted on the wall.
Ahma BeerChapter: Return 1: Invitation. Return to the restaurant after the confrontation with Nightingale at the police station morgue.
Coffee WorldChapter: Return 3: Local Girl. You should see this commercial when you are leaving the building after interrogating Alan.
Parade FloatsChapter: Return 3: Local Girl. The TV is located in one of the trailers that are in the Lighthouse Trailer Park.
Bright Falls BlendChapter: Return 5: Old Gods. If this commercial doesn't start playing when you enter the room then try to leave the room and re-enter.
"Return" ReviewChapter: Return 8: Deerfest.
