Thinkin' about My Doorbell is an Achievement in Halo Wars that is obtained when the player opens the doors in a particular order on Escape. It consists of a green square with a yellow bell in the center and is worth 5 Gamerpoints.
You have to open the doors to the Portal in the following order:
- The door just North West of your Starting Base.
- The door directly opposite of Door 1.
- The door to the east of Door 1.
- The door directly opposite of Door 3.
- The door to the north of Door 3.
- The door directly opposite of Door 5.
- The achievement title is a reference to the White Stripes song My Doorbell.