I really like how you used the theme! I had a lot of fun with this one. The VA is a very nice touch.
I think I found an issue where you can't mutate if an enemy becomes tagged when they're already within your radius - you have to walk away and walk back to them first. In addition to that, the mutator chip count in the top right corner disappeared after the second shopping period for some reason. Aside from those small issues, though, I really enjoyed this one!
Great work!