10 out of 10.
I love everything. Probably because of the nostalgy by the way.
OSTs like this, so good that you could listen to it even when you're not playing, are rare, and this is one of them.
Most of the songs are masterpieces. At this point, I probably have never found a soundtrack fitting so good to its game.
Recently , I was playing The Witcher 3 : Wild Hunt, and fun fact you can hear a bit of some HOMM4 songs in some ambiant music in TW, like the Skellige's one.