While it doesn't fit the theme, This is actually a very Interesting strategy game to be honest and can turn into something big. Here is my feedback:
-I have actually faced a couple of issues with the path finding and the soldiers were stuck in walls and the edge of the screen, so I think you should look more into this.
-I Really liked the variety in the goal system you made, and the variations in every level is really cool.
-The Music choice was also really suitable for the game and I really liked it, and the same goes for the art style.
Overall the game has really complicated and cool systems implemented, and I really applaud this effort you had in this game, Looking forward for future updates!!
Note: The game loaded Pretty fast to me, so no worries regarding its loading time, maybe adding a loading screen would be a good decision.