Really liked the concept and the art is great, the placement and spawning is cool and I wish there were more units to play around with. I also made it though to the end and was disappointed that there was no way to win from what I could tell.
Although the animations are great, they take way too long and especially when there's 20+ units taking turns it adds up. I also would suggest maybe obscuring some of the map or making it smaller early on so the player isn't overwhelmed.
I suggest showing the controls in-game in the corner for handiness, as well as highlighting units which can move. I also had an unfortunate bug where the selector was offset by half a tile and I could select but not move units.
Overall, love the concept and probably the game I have spent the most playing so far.