I am 6 years late to this game.
WH40k is an amazing universe.
They include more factions, races, AND troop-types than i ever expect to see, and they all look amazingly like the table top models.
The game play is barebones.
The Crafting systems is exactly what I want in an ARPG; give me the components and let me handcraft my ideal gear build.
The grind for those components is utterly too much.
WASD movement! Thank you, but it still autopaths you in a direction even with WASD as the control scheme.
Too few abilites to make gameplay investing.
Too few enemies for an ARPG. After I got the hang of the defensive states and got a weapon/passives with life steal I was unkillable. Played 60% of the campaign with little regard to my own safety.

Excellent, that is all you need to know, get in 'ere and try it!

good 40k story