JYDGE

Here's a link to a handy Youtube-playlist that shows how to get all the nightmare medals. None of them are really all that bad in the end, but some of them might take a few tries. I did not make this and all credit goes to the original creator

https://www.youtube.com/playlist?list=PLRrQiZdjpYkKhOICjweWt...

I'd recommend maxing out heavy bullets, ion, flame grenades and stun grenades since those are the ones you'll be using the most.