User blog comment:DYBAD/Character Sheet/@comment-25417020-20141029134014/@comment-4867780-20141030054124

That would be a sight XD The Soldiers guarding the portal would probably gun him damn long before he reaches the portal, most likely with special attacks to neutralize the explosives.

If they do reach the portal, I guess they could damage it or even blow it to pieces. Never really thought about protections for structures, most likely they would just self-restore like the Soldiers.