Wow, I forgot to look through the Helper package. There's a lot of useful stuff there, including the "AOGame.exe" as well as protection files needed. So if you take the "Client" package included and use the "AOGame.exe" from the "Helper", it should match up correctly.
To start the client, there's a few ways, depending on which way you load it, but right now I'm testing with the "AOGame.bat" in the "Helper/Release_bin" folder. It crashes on character creation though, so I switched over to the files in the "Helper\Unprotected\GM_bin" and those seem work. The working AOGame.exe does not need any arguments to start for this version!