I enjoyed the first 20 hours, visually it's stunning, combat is good - there's one fundamental problem, it's boring, there is nothing that sets it apart from valhalla, odyssey etc, in fact it's been stripped down from those games with no side features like viking ship pillages in valhalla. It's just run around and assissinate someone from a clan that you don't care about over 100 times. I'm completely lost on the storyline, because there isn't one, beat a bad person then there is another bad person higher up the chain, you will forget all their names along the way except the revenge plot where the game begins but you kill him early on! so you simply won't care about the rest of the baddies as there's no vengeance to be had anymore.
The hideout is pointless as you just don't need it - you get good armour and weapons throughout the game, no point in upgrades, engravings etc. Allies, scouts etc are all nothing new.
I guess the only unique thing is the 2 characters you can play, but that gets tiresome, she is way underpowered and he is overpowered. Nothing more annoying than being in a castle as the guy who can not climb well, clear it, get to the tower to the viewpoint only NOT to be able to get on the roof to complete it as tyhere is no hatch and the roof overhangs too much for him to climb, can't change character in a castle, so you have to go outside, switch, come back as Naoe and climb again! flawed!