Awesome project looking forward to seeing it progress.
I don't use Windows, so I can't promise anything, but there's nothing there that may prevent it from working on Windows. It's pure Perl, so the code itself is portable. If you have any particular problem, feel free to email me (address should be in the repo); and if you have success running Odin on Windows, I'd be very interested in hearing that too.
Re hybridauth: using different identity providers is somewhere between "it's possible" and "it would be nice to have" priority, unless we actually need it. The idea is to have the SSO for the internal services, and hybridauth seems to be focused on end user and social authentication. Also, Hybridauth itself is PHP; while in principle it should be possible to implement the authorizer app in any language, I'd prefer to keep it in Perl until there's a really, really good reason to switch.
If I work on option on different identity providers, it will still be rather focused on internal services use case than end-user social authentication use case. However, I'd be happy to see and review a pull request implementing social auth if any of Odin's users needs that.