The Ruined Wall Token is used to mark broken walls. Broken walls enable XXL Models to enter the Building.
Destroy Wall
The "Destroy Wall" action is mainly available to XXL Models. When two or more of the Squares an XXL Model occupies are Adjacent to a wall, they can use an Interact Action to break the wall. Place a Ruined Wall Token over the wall to indicate where the hole is.
Buildings that have a Ruined Wall Token on any of their walls no longer provide the -1 modifier to Attack Combat Dice.
ERRATA FROM ARCHON REGARDING DESTROYING WALLS: Using an Action, an XXL model can smash a hole in a Building's wall to be able to move in and out of the Building, as they are too large to fit through normal openings. When an XXL model is orthogonally adjacent to two or more squares of the same Building's wall, they can use an Interact Action to smash that wall. Place a Ruined Wall Token on the wall edge of each square of that wall that is adjacent to the XXL model performing the Action; this is similar to pathways in connected Buildings and the Building is considered a Ruin (see page 24). For example: The picture shows a Building surrounded by two XXL models, an Alien Overseer (Blue) and an Annihilator (Green). The Alien Overseer is adjacent to two squares of the Building’s wall that are directly in front of it, and as such can smash the wall. The Annihilator is only orthogonally adjacent to only one square of the Building's wall, so it is unable to break it down.