Nice game and really clever idea! Just a heads up: I had to run it through the command prompt because Python threw an error. So to play it, I had to cd into the 'Vector Clash' folder and run  Main.py (i had to change it for execute it easily) manually. Maybe you could adjust the file structure so it's easier to launch, or mention this in the instructions.
Also, it would help a lot if you explained all the inputs — for example, I wasn’t sure how the CPU shoots or how that works exactly. Overall, really cool project though!