Something meaty! Yay!
Well, not that meaty. And I still need to figure out how to pull off a reasonable screen grab. But hey, at least it's something.
The Unity tutorials on Tilemap basics are... well, pretty important, and predictably informative, despite (also predictably) being built around a side-scroller rather than an overhead environment. Thanks to those, I got my colliders working reasonably well, and altered my movement script to handle them with a raycast. There's no real animation, and I might just skip that in the interest of actual functionality, but at least there's an environment to move around in.
I threw in a very temporary text field with one of Kenney's pixel fonts just to test grabbing dialogue from the right source (and invoking the control panel correctly for when you can actually use this thing to blow up planets).
So next -- hopefully meaning tomorrow morning -- I'll be starting on targeting and eliminating those damnable Mutinous scum. I'm honestly looking forward to dialogue trees more than the actual targeting and destruction, but I must stick to the roadmap. The roadmap is good; the roadmap is wise. Do not deviate from the roadmap.