While I don't have a Windows machine to test on now, I had gotten Arc working quite easily before on one (I was not running HN, which would exercise more code paths than were executed). Try it and see what happens.
Alternately, if this is an existing project, someone at the office should know how to get it working. If you try it and something breaks, let us know and we can help out!
I have a Windows 8.1 machine now, and it's still the same process. :)
The biggest pain was when I was trying to download the Anarki GitHub repo in the first place. I've been cloning GitHub repos over SSH URLs using Cygwin's build of Git, and setting this up on Windows 8 was a bit surprising: http://stackoverflow.com/questions/9561759/why-cannot-chmod-...
Nowadays, there are probably easier ways to get Anarki on Windows, like using GitHub for Windows or just using the GitHub website's "Download ZIP" button.