A fun little game. I enjoyed the comic book style of telling what story there was, and the difficulty didn't get too hard, too fast, though I spent so much money on repairs that I could barely make any for actually upgrading (I ended up upgrading three things total). It would have been nice to have some music and sound. That said, the gameplay was simple but fun and I quite liked it despite base defence not really being my type of thing. Good job!
Have a video: