@N7 it is not abandoned but on hold as Tom told on Patreon. His words literally were:
The project is currently in a standstill due to a defence of my engineering work and the upcoming master's defence. I'll inform in post when project will be continued.
I will still never understand how the images in this game are encrypted. I remember trying to figure this shit out 4 years ago. I don't think I'll ever get answers.