You can find the Fate Core Combat Simulator here:
https://stash.krischel.org:444/projects/PUB/repos/fate-rpg/browse
If you want to git clone, you'll have to skip ssl verification:
git -c http.sslVerify=false clone https://stash.krischel.org:444/scm/pub/fate-rpg.git
After you've cloned, you can permanently skip ssl verification for the repo with this command:
git config http.sslVerify false
Now supporting the simulation of arbitrary teams. Teams both try to bluntly kill each other, in order, but you can customize every parameter of both physical and mental attack, defense, weapon, armor, stress, as well as consequences.
The only rub is that additional consequences (which are usually limited to either mental or physical) aren't handled very well.