I know this thing got updated... But abandon tag when? No, seriously.
When?
The fact there are more technical remixes & galleria showcases than concrete overall progression within the span of 2 years demonstrates to me he's run out of inspiration for this project and is ready to move onto the next. This whole project is starting to feel like a retread of Future Fragments: too much writing & dialogue, a project scope that becomes opaque over time, and feels more like a sprite portfolio advertisement than a Metroid platformer.
My advice for him is to either commit to this project on a smaller scale, or drop everything and take his ball to go deal with real life because it looks like he has his own...
Crisis Point.