Thin layers of C-5, QRTZ, and INSL, repeated a lot, would probably be safe from this. With enough cooling power and several layers seperated by INSL and TTAN, VIBR might work too. Of course, DMND is the easiest solution to the problem, though. You have to define what you mean by a bunker first.
i think anything destroyable with heat or pressure, but a wall of frme beats it, warp can warp frme, bcln can help