Invulnerable, all the way. If I was invulnerable, I would join the army. It would be sweet. Imagine we are at war, and you are on the other side, and you me jump out of an airplane with no parachute, then hit the ground running, guns a blazin'!
"Oh ---steaming pile of meadow muffin---! Did that guy just JUMP OUT OF A ---smurfing--- PLANE WITHOUT A 'CHUTE!"
"Hell yes! And he's coming right for us!"
I would singlehandedly be the world's most ulitmate weapon, in return for service, I would enjoy a king's lifestyle.