They sold us this DRM-Free on Humble a while back, then killed the copy we bought, ended up with a Steam key instead.
Their "cheaters" aren't as big a deal as the whole system failing and exposing users to potential threats.
They *really* need to bring back the DRM-Free version I bought, and just remove server access, let us play direct connect multiplayer or local games and not be subject to buggy insecure servers and Steam account requirements.