Good game.
Some minor criticism:
-On the 2nd map, the lowest 2 tiles are blocked by the menu such that you can't click them to move units there (maybe using fullscreen fixes this, I didn't try that, but might be worth looking at regardless).
-During the tutorial, I made a scout unit right after creating the surveyor unit, but it still forced me to make another later in the tutorial. Maybe either take into account already existing units for the unit creation tutorial, or don't enable the creation of specific units until that part of the tutorial.
-The final quest broke for me and gave me the win early (the quest said I needed to find the guy with the overmind, and bring a unit that fought it back, but I just fought a random enemy, brought that unit back and got given the win despite never seeing the overmind in that expedition (I did see it during the tutorial after letting the soldier unit go out fighting, so maybe that has something to do with it)).
-On that note, it's frustrating that the tutorial railroads you into sacrificing a unit, since I want to save everyone I can (I get that the point is to show that not everyone can survive, but that unit ended up being the only casualty for my playthrough (even though I got the glitched win, I had enough crystals and barrier health left to train units to capture the overmind without unnecessary deaths)).
Overall as said above, good game.
