Actually did some work today. Mostly it was spending a lot of time banging my head against how to do collisions until I realized I was forgetting something simple. Whoops. Still, I have a movable player character now, and collisions can be drawn onto the map. Next goal is to get map interactions done, and then I think I will move onto the battle system. Once I get these core features down, I can start implementing the dungeon(s?) and then look for other features that need adding or polishing.
One thing I am having trouble with is refreshing my sprites for the tile map in Unity. I found a supposed "way" to do it, but it completely screws up my map, replacing all tiles with various shades of red. I cannot imagine that there is no way to update the files, so I’m missing something.