I think you did a nice work making this! I think it's not that easy to make these fun, as these tend to be boring or have a lot of balance problems and aren't really playable. I think you designed a pretty good strategic game in such a short time.
There may be some UI responsiveness problems in the buttons or selections, and some minor bugs, but not anything too bad or game breaking that I found. I don't really like that it doesn't pause the game during the tutorial, because you can't build during this time until you press continue, and it's not really clear what's wrong or why it's not working. Other than things like that I think you did a nice job!