Just d/led the PDF of the Death Korps of Krieg army list from Forgeworld.
http://www.forgeworld.co.uk/Downloads/Product/PDF/k/kreig.pdf
The Hades Breaching Drill deploys by Subterranean Assault, much like the Mawloc. However, it seems as though the Drill has the ability to *move Bastions* (and presumably lesser buildings) out of the way.
"If any models (including Bastions, etc.) are touched by the template, they are hit by the breaching drill's melta-blast and whirling powerblades...[rules for damaging models hit]...the drill is then centered on the spot from which it emerged, and any surviving models caught in the blast are moved 1" away from the drill....small removable terrain should be taken off the table. In the case of large pieces of terrain, move the drill as it emerges so it is as close to the target point as you can get it."
I would have thought that a Bastion counts as a "large piece of terrain", but Bastions are specifically and explicitly included in the definition of "models" in the same paragraph. "Any surviving models" are moved 1" away from the drill. It seems pretty clear
RAW, though I'm not sure that moving a Bastion was intended.
Hey, if you successfully Subterranean Assault into the middle of a Fortress of Redemption, you'd have to move that sucker a fair distance to make sure that any part of it was 1" away from the drill.
Thoughts?