This game is as online as Warhammer: Vermintide 2 is though, and that game is supported by the team (despite all the EAC trouble), so I'm not completely sure why this one's retired. Also it recently progressed into beta, for those interested.
well to be fair, vermintide 2 FOR A TIME, would allow you to play offline with bots.. they only added the EAC crap after the beta was over
best,
Cal