So, siren has said something about finishing this game? maybe this year? 2024?The game had some hiccups in the beginning in addition to it being way bigger and complex than Zombie Retreat 1. In terms of maps this games gone way beyond Zombie Retreat 1. To compare ZR1 has 77 maps. ZR2 currently has 91 and is not even close to being done.
Back on the topic of initial problems, there was the issue of if the art was ready or not. This seems to have gotten somewhat better over time. I don't like saying this but On Edge and Prince of Suburbia dropping Scarlett probably helped Zombie Retreat indirectly.