I really like this soundtrack and I'm going to list the things I like most:
1. The amount of bombastic climactic sounds suggests a lot of action scenes
2. The use of traditional japanese instruments
3. The way it sounds unique and unlike what I've heard before, yet some moments clearly reminded me of the classic godzilla scores
4. The last song titled "Back to the ocean" clearly suggests that a Godzilla is not viewed as a bad guy at the end of the film, but as a kind of unsung hero.
The only criticism I can think of is that there weren't enough smaller more quiet moments in the soundtrack. Because the quiet bits that I did hear were very good.