How do you get a Die Hard medal?

Continue to contribute to that spot, like you're doing now. Posting polls is often not the quickest way though, as in most spots, not many people answer them. I believe uploading images and links are the quickest way to go.

Wait, did I just give you advice on medal whoring? Errrr yeah, just don't upload totally useless crap that nobody gives a sh!t about. ;)

You must pay with your sou- oh waiiiit, this isn't Reddit.

Whore. You must whore like there is no tomorrow.
Nah I kid, don't do that. Just upload and contribute. GOOD content though.

Its So simple, Just continue to contribute to that spot..
Add images, videos
Stay in forums
The most important is adding images and videos.
You'll get a die hard!