An underrated gem!
Ok so first up, I played this on ps5 so I don't know how much difference that made but I didn't experience any real stability issues, no glitches or crashes I can remember. And the other big complaint is the story which I agree is functional at best, but the positives...
The game world look great, with some really memorable level designs and cool grimy aesthetic. I have a passing familiarity with the 40k universe which might help but really I don't think that matter because ...
Gameplay! It's awesome grappling hooks, wall running, gory close up kills and a dog! I really don't think this game gets nearly the praise it deserves. When it's firing on all cylinders it's bloody fantastic fun, flying through goons with your trusty boltgun, knife and pooch, and blood and body parts flying left and right.
For fans of Doom and Titanfall 2s campaign, give this a go, there is a lot to love