I have around 150 hours in the game and 100% steam achievements. I’ve been meaning to pick the game back up, but I’ve pretty much levelled all the classes to max and collected pretty solid gear. Now, if Okri’s challenges were added as steam achievements, it would give me that extra incentive to pick up V2 again and enjoy all the new content that’s been added since I stopped.
Killing Floor 2 is a perfect example of this phenomena. I’d bet that if you added more achievements, you’d see a lot more returning players.