So I'm about 50% of the way through now (according to the game anyway) and although I was quietly optimistic at the beginning, it's now really, really great.
Open world games are one of my favourite genres and this is definitely one of the best. It's like a blend of Dragon Age: Inquisition, The Witcher 3, Far Cry Primal and The Last of Us. And barring the latter I'm not normally that bothered with video game stories - but this one is actually interesting.
The combat is great, though can get messy in close quarters with bigger machines.
I don't want it to end. I already want a sequel.
Oh, and yeah, it's one of the most beautiful games I've ever played.