RTF is a global modification that replaces all towns in the game.

"Faceless," I think it should be someone with blurred, indistinct facial features... like they're wearing a tight-fitting leather mask over their face, and all individuality is erased, so there's just a vague outline of a nose and so on... something like that.

Creepy) I respect that.
But unfortunately, I wanted to base it on the established Heroes canon, and according to the canon, the Faceless has a white mask with two glowing eye slits, or no eyes at all; under the mask, there is no face, only darkness...

Making a skull would already be non-canonical.

I wanted to make a mask with a hole, but the unit is too small, and such details wouldn't be visible.

Added 1 minute ago
I would add iron shoulder pads, masks, and belts, but I don't know which materials to use and where to get them.

Added 30 minutes ago
Oh well, maybe I should start by just making a cool-looking Faceless