Omg tysm for playing! It's a blast watching you play!! The game is definitely rough around the edges but I'm so glad you've gotten so much enjoyment out of it already :P
A patch is coming later this week that will rebalance the tech tree so that you can set up defenses earlier, as well as adding in some new buildings and configs! After that I'm going to work on saving/loading and we'll be well on our way to v0.2!