I'm going to chime in on the "never even heard of this game" train.
And based on that, I'll "tinfoil hat" a bit: the game doesn't seem to have any kind of mtx (it does have a deluxe edition items which apparently offer boosts) - so the publisher didn't push the game as hard as it does with it's live service games -> very few even have heard of this game.
edit: because sources: https://www.pcgamingwiki.com/wiki/Immortals_of_Aveum#Monetization - didn't do any further research on the matter.
edit2: also, on the article:
... trying to make a AAA single-player shooter in today's market was a truly awful idea, especially since it was a new IP that was also trying to leverage Unreal Engine 5. What ended up launching was a bloated, repetitive campaign that was far too long."
...so, they even admit it themselves that it's pretty meh? And then it's framed like single-player games just don't sell.. what?