Ruins
Explained by Jack
Gud ta know
toe ruins = no cover
When determining visibility, use true line of sight to the target if that target is only within (not wholly within) a terrain feature. This means that unless there is a wall or other obstacle physically blocking Line of Sight, the target will not get the benefit of cover.
– WTC 10TH ED. FAQ DOCUMENT
Note
Footprint
When this terrain feature is set up on the battlefield, both players must
agree upon its footprint – that is, the boundary of the terrain feature at ground level. This is so that players know when a model is wholly within this terrain feature. If this terrain feature is mounted on a base, then this will define its footprint.
– Core Book
Benefit of Cover
Each time a ranged attack is allocated to a model, if that model is either wholly within this terrain feature, or it is not fully visible to every model in the attacking unit because of this terrain feature, that model has the Benefit of Cover against that attack.
– Core Book
Plunging Fire (-1 AP)
Each time a model that is wholly within this terrain feature makes a ranged
attack, if that model is 6″ or more vertically from ground level, and every model in the target unit is at ground level, improve the Armour Penetration characteristic of that attack by 1.
– Core Book
Movement
Infantry and Beast models can move through this terrain feature (walls, floors, ceilings, gantries, chains, etc.) as if it were not there. A model cannot end a move within a wall, a floor, etc
– Core Book
Set up on the floors
Infantry, Beasts and Fly models can be set up or end a move on any floor level of this terrain feature, but if that level is not the ground floor, such models can only do so if their base does not overhang the floor at that level (if a model does not have a base, no part of that model that would be in contact with the battlefield at ground level can overhang that floor). All other models can only be set up or end a move on the ground floor of this terrain feature.
– Core Book
Visibility
Models cannot see over or through this terrain feature (i.e. a unit outside
this terrain feature cannot draw line of sight to a target on the other side of it, even if it would be possible to draw line of sight to that target through open windows, doors, etc.). Aircraft and Towering models are exceptions to this – visibility to and from such models is determined normally, even if this terrain feature is wholly in between them and the observing model. Models can see into this terrain feature normally, and models that are wholly within this terrain feature can see out of it normally.
– Core Book