The warning text that has been added does not adequately describe the extent of the game that is locked to online-only. All progression - mastery levels, challenges, and consequently unlocks for different starting locations, stashes, equipment and weapons - is also locked behind the online mode requiring connecting to the game's servers. So you cannot ever use anything other than the default starting status, I would consider it similar to a demo. The first words of game description itself are, "Experiment and have fun in the ultimate playground" - this is more of a sandbox than a linear, play-each-mission-once style game. I have this game on another platform, and enjoy playing methodically going through each mission to fully explore and complete it as much as I can before moving on to the next. I have 56.5 hours recorded over the tutorials + first two story missions. To be generous, that a 'default status' run of these levels took me one hour each, that is just 4 hours, or 7%. 93% of my experience of the game was reliant on content that is locked behind online-only DRM, even here as being sold on GOG. There is a text on the sidebar "DRM FREE. No activation or online connection required to play. ", but I could not consider it is true for more than a fraction of the game's content.
