Had fun playing! I think I made an op orientation immediately for the amount of waves that exist in the game. I was just thinking to myself how this tower placement pattern won't work long term as the aoe tower's that are placed further in wouldn't have enough range to attack when the game told me I won soon after.
I think having more waves would make this game even more fun, as it will give player more chance to mess up and to keep iterating through their strategies until they could make one that works, enjoying a longer game.
I think your focus seems to be in the programming & making a gameplay loop that works so good job on doing so! I can see that it must be fun trying to code it.