Hello, and thanks for the comment!
as you can probably tell, development on the game has been stopped for a loooong time now.
Unless you're generous enough to send 5 bucks my way; I suggest not buying the game hoping for an update; as new updates are highly unlikely to happen anytime soon.
and also, yeah! the game was supposed to be a mix of the games "Last Stand: Union City" as well as "NEO scavenger", glad that intent showed through!