It took a few minutes to load on my mac (tested on chrome/firefox/safari), glad I didnt quit. I really like the customization UI, the gameplay loop drags a bit. If youd like to develop this further Id suggest the ability to queue commands and add fast forwarding along with visual enhancement (which you probably know). Is the enemy attacking order from top to bottom (head first)? It seemed to me that way which is why I only upgraded my legs and in order to stay more agile. The concept is very cool. Good job!