"Arch Linux, a lightweight and flexible Linux® distribution that tries to Keep It Simple."
Thats statement is so full of shit!
It is noting but a terror to install, even if you downloaded the iso and 'burnt' it to a usb key, you have fuck all chance of installing on a host system without downloading everything again. As of August, Arch has dropped theit automated install (Arch Installation Framework), forcing users to go back in into the dark ages of fdisk and parted...
And to add insult to injury, if you do not have a internet connection, you cannot install.
Fuck that, don't waste time with arch.