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

I just made that observation, but I want to make everyone look scrawny, give them some alternative armor, and also some weapons. The sword doesn't attach well, so it will be something exotic, like Freddy Krueger's claws or something else.

No armor is needed – only the ones he has on his belt (they can be somehow developed/changed), and his torso should be bare.
And also about the mask – the ear-to-ear smile doesn't appeal to me personally; it should be a "face" without emotions.
Regarding Freddy's claws – I think it would be cool.