Nice rock!

The grass/dirt transitions seem very noticeable now & appear a bit messy, I think the gray you removed was helping the transition a lot.

The long grass is too spraycan-tool-y, I think - the appeal from the beginning was the very clean, uncluttered approach you'd taken. I think you could approach it more like the short grass & dirt (ie. expanses of flat rendering with texture variation tiles) & still have it read as long grass. I was actually working on an edit, but I couldn't do any better so I ditched it. Easy it ain't.

edit: Oh, about the different environments: You could take that approach, but it might be more interesting if you gave each environment some unique gameplay mechanic that the others lacked. For instance, no hiding in the snow snow environment, but enemy troops leave lasting footprints & so can be tracked, or something.

Seems like a bit of a false dichotomy, I'd rather spend 32 minutes with the good gameplay. 
I don't begrudge anyone liking cutscenes, though.

Is there a reason only modern chiptunes are being played/discussed? Just preference?

Perfect!
I want one.