it's basically the same game with better shooting and worse visual level design with functionally the same specials and far weaker characters personality-wise as vermintide 2
it does have a "better" progression system because you get paid with cash that you use to buy what weapons you want instead of random equipment rolls but the game currently runs like complete garbage even with the newest drivers on very competent systems, with loading times especially being atrociously long unless you have the game on an SSD
unless you're a bigger fan of 40k than fantasy (which i am not because i think the lengths the writers go to portray the universe as this unimaginable dystopia goes full circle and it just gets funny), vermintide 2 is imo the superior product and considering it recently hit a player count peak, got a free dlc 2 weeks ago AND it's on sale for like ten bucks until the 22nd, i would recommend buying and playing that until fatshark unfucks darktide's performance