Well I finally decided to sit down and give this game a go. I sat around yesterday for about 8-9 hours and just went balls deep in this game as I had heard a lot of positive reviews but not really given it a shot.
It is pretty fun. Everything works as it should, no bugs or glitches (that I've come across) and the nemesis system really makes this game. Now I haven't unlocked the Brand ability which makes enemies fight for you or been able to send a death threat but the gameplay is pretty addicting and the brutality is very enjoyable. There's nothing more satisfying than chopping off an Uruks head and it never gets old. The combat is very reminiscent of a modern batman game yet so much more enjoyable and the abilities you unlock later definitely make it far less of a button masher.
There are more things I have yet to be able to do and those are the things I have been most looking forward to doing so I imagine this game will only be more fun and addicting as I go. I can't wait to get done with work today to slay some more Uruks tonight haha.
For someone who passed on Destiny and Advanced Warfare, Sunset Overdrive etc; I would highly recommend this game as a great filler. I would however stay away from it on last gen as I know the nemesis system is pretty neutered as far as what you can do.