I worked on this two weeks ago and then put it aside due to frustration. Silent install documentation online is not for current version with the new front-end menu system. Things are a little murky now since I waited.
I've got a script that runs things in this order:
- extract ISO
install Server.x64.msi <- fails due to a dependency but log doesn't say what the dependency is
p.s. I had Visual C 2010 Redistributable and .NET 4.5.2 already installed. (I think both are needed.)