Prebuilt binaries for 2.2.12, both 32bit and x64 versions, can be downloaded from here:

Direct link:

https://github.com/downloads/dmajkic/redis/redis-2.2.12-win32-win64.zip

Other versions are there too:

https://github.com/dmajkic/redis/downloads

Source code is on GitHub

https://github.com/dmajkic/redis

Regards.

Dusan Majkic