I recently started again after an abandoned attempt to play it when it came out. Surprisingly, it does not look or play bad at all, it is just unapologetically hard game, if you build your party the wrong way, you won't be able to progress. Hopefully with 3 they will balance it out better. You should also take a peek at Metro: Exodus, if first person post-apocalypse is your thing. Short and far from trully open world, but very well made and atmospheric
I didn't find it hard, I just found it boring. With some truly terrible design choices because it was trying too hard to be oldskool. It seemed to be pretty easy if you min-maxed your characters.
I remember getting to the 2nd map (Los Angles?) and the first mission was this huge map which was hardly used. Massive waste of my time baby sitting and watching people walk.
And that was when I had enough of the game designers wasting my time so much and stopped.