NND Tunneling

[altamaros]

a) Is it possible to take the NND advantage for tunneling ?

(basically allows the tunneler to go through anything except the defined defense)

One of my players wants to create that to simulate a "merge with matter" power.

Daniel

[Steve Long]

Unless the GM's specifically willing to permit it, I'd generally consider that illegal. What you're looking for sounds to me more like a form of Desolidification, perhaps with some Limitations.