Spiritus Astrum [P0-B11]: p1506: Towards Early Access

I am still working on adding more objectives and features to the missions.

The missions are quite short, but I want each one of them to have some unique element.

I have added several additional elements to the missions, and fixed some bugs, made some improvements, etc.

I have also created some art concepts for the game, although the art is mostly just placeholder art for now.

Most of the core mechanics for the third campaign are in place now.

The next step is to add the artwork, and the story.