usually just unzip it into the data folder and all should work.But some custom clients need to rename the patches and put it into the location folder enGb or deDE and so on.For example patch-enGB-F.MPQ,patch-enGB-F.MPQ
xD maybe the mega limit was reached and you get just a bit, try redownload.It resett all 5h.
Edit: In Ghoul2 is just armor reflect and nothing else.That is in alot floders just blp and no models but that is correct if in ghoul all models inside.The data size is around 450mb than there is no problem.
same name like the old ghoul, did you add the patches to the model viewer config?