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

in the third part, there are also creatures that fit the style of the heroes:

Brute Angel
Flaming Guardians
Void Guardians (several types)
Phantom Guardians (several types of demons)
Penitent Undead
Abomination from the Depths (local kraken)
Undead Rider (analog of the Fallen Angels from part 1)