Helldivers 2 is, as stated by the devs, slowing down the pace of its updates after its initial gold rush, which saw player concurrents in the hundreds of thousands. It's still got a healthy community at present, though Arrowhead seems determined to avoid another Polar Patriots fiasco and tidy up its bugs.
Still, that's not to say it hasn't been hard at work. There was a big patch recently that saw balance tweaks to the entire game, and despite recent frustrations, Arrowhead seems to be getting more experimental with its major orders...