I gave this game a lot of love a while back.
I started with Hearthstone and then found this and a slew of other card games. Witcher, Horus Hersey, MTG, Warhammer AOS.
Warhammer Combat cards had some great events. Getting a decent deck was not too difficult.
PVP was handled offline. But the AI plays the deck of a real account holder even if they're not around.
I played a few games where I felt there might had been a P2W element. Where one purchased card trumped my entire deck.
Aside from that issue, it plays well, graphically it's great, sound scape is very 40K.
I was surprised to see no reviews here.
For any 40K fan I'd strongly recommend this.