HammUEr, a Hammer/Worldcraft map importer for Unreal Engine

From a quick browse of the internet, the format isn’t solidified yet, and there’s multiple versions out there.
Not only that, but as I said, it’s purely mesh based and not BSP like older Source/Quake-derived engines, and the file format is a horrible mess, so yeah, at the moment, I’m just going to say no, sorry.