[Imp]

So going back to my previous post if it tries on its own will probably fail.

If however it gets a bit of support hence if you like disracting the occupants or preps with a DC FT its self first it will probably succeed.
If it starts the turn adj & the bunker is suppressed the assualt will probably work definetly if 2 units do unless roll snake eyes.

Therefore the % seems fine no prep work support is a disaster but a bit of planning & job done either by assault or possibly use of weapons before even need to. Any easier & there is little point having them IMHO
having said that I do hate spidy holes.