What kind of zombie apocalypse? What kind of zombies? If I take mjolnir can I fly? Also despite having human stats, can I whack people and send them flying? Or am I basically swinging a sledgehammer?
Hmmmm I'd probably go with Mjolnir. As much as I'd love Diana's skills and her near infinite stamina, I'm assuming my stats would otherwise remain the same.
With Mjolnir not only do I get a super weapon that takes almost no skill to use and is perfect for breaking bones and skulls on top of sending enemies flying like Thor, the lightning would help not only with crowd control, but powering my settlement. I'd find some generators or a small town I could shore up and just charge the batteries every few days.