I picked this up during the Winter Sale and holy fuck I am obsessed.
I have over 50 hours since Christmas. Played once as the Dark Elves but gave up once I realized I couldn't catch up in Vortex Rituals. I was just learning the mechanics of the game, how shit worked, what the nuances of the faction were.
Second run is with the Skravens, as Clan Mors. Almost halfway through the rituals and am having WAY more fun knowing a bit more of how the game work. Starting with a new race was a fun learning curve as I figured out how Hunger and Corruption work, plus how to compete with the Lizardmen and everyone else who has these insanely tough units compared to my weak Clan Rats. Finally getting to the point where we have some really solid units that can compete with the other factions and win. Shielded units, warp fire throwers (my favorite) and artillery.
This game seems to have an insane amount of replay value. It is extremely addicting and I have stayed up past bedtime on multiple occasions.
My girlfriend has even expressed concern over how much I have been playing although she has agreed to refer to me as "Rat King Daddy", "King of the Rats" and "Rat Lord". I even have a new contact photo in her phone.