Smooth Blend is an achievement/trophy exclusive to the North Star episode of Alan Wake 2 expansion, Night Springs.
Guide[]
This achievement is obtained by entering the warehouse office without being killed by the Coffee Mascots in two tries or less. Upon entering, one of the mascots will move in your direction. Hiding behind a pile of coffee bean sacks on the left, wait there until the mascot moves leftwards. Go in the opposite direction, passing by the blue lockers, and turn right once more. On a small table near the corner of the warehouse, you will find a red toolbox that contains the Warehouse Office Key. Once the path is clear, use the key to enter the office.
While they normally move slowly, the Coffee Mascots will increase their speed upon having you in their line of sight, making it almost impossible to outrun them. If you are caught, you will be immediately killed.