When I completed levels in the two base campaigns, I would get a yellow "hardcore" mark for beating them, which would show on the level-select screen on each thumbnail.

Now that I've subscribed to Therium-2, on the Therium-2 levels I only get gray marks similar to the "casual" symbol. Is this because you can only get grays with mods installed? Or is it because Therium-2 specifically doesn't have the difficulty completion marks wired in? Or what?

I want to know if I can set it to give me proper difficulty completion marks before diving all the way in. Thanks!