It leads to a great disappointment if you followed the prequels of this book or the previous parts. The detailing of war tactics were brilliant. The human touch which we connect with Amish sir's previous books was missed in this one(in my view).
I found the expectation which I had with Mr. Amish was way more for this book. All the buildup led by the previous 3 books made me felt this like Game of thrones "The Long night" episode where the night king was killed by Arya in a single and sample strike.
Apart from that Mr. Amish vision and connecting many points and the brotherhood between Raavan and Kumbhakarna made me invested throughout the book. Expecting a better climax for this series.