Hello fantastic
that was my question also and after a few months digging around and figuring stuff out there are 4 choices I know for ARCH system to livecd
larch, kinda hard to use due to many options, etc
https://wiki.archlinux.org/index.php/Larch
archlive2, which is how ArchBang is made
https://github.com/godane/archiso2/wiki
archiso maybe the best
https://wiki.archlinux.org/index.php/Archiso
and my own effort which simply consists of a modified linux-live-6.3.0 (thanks Ritchie at Slax forums!) and some other scripts from Slax that allow you to make your system into a livecd
That's how my own nFluxOS ARCH and Slackware builds are made
http://multidistro.com/
mine is probably the easiest to use, but the three above probably have more options in some ways and all three above use a ARCH kernel, whereas mine right now uses the Slackware smp kernel
https://aur.archlinux.org/packages.php?ID=41875
So, tell us which one you want to use and we'll go from there...