Define “kill a lot of them”. Would it work like - after killing 6 of them they then drop a coin?
Already explained by minasam
Hey, that’s mine 
Ideas from my old email conversation
I’m against it. I’m also against the amassing 100k keys, but I guess it’s too late. The thing with these medals is that they stop you from actively using the game mechanics. Plus it is a total grind. And that’s one of the things that I hate the most in the games.