Prithvi narayan wasnt trying to unite a nation, it just so happened that he wanted to expand his territory and ended up forging a nation called nepal and got credited for it and yeah that bastid! was cruel for doing what he did in Kirtipur. Kirtipureys remind me of the Spartans from the movie 300. if it hadn't been for that one traitor prithvi narayan would have never or would have had been much tougher to conquer Kirtipur.