This script (https://gist.github.com/artixnous/41f4bde311442aba6a4f5523db921415) has been used to successfully convert a fresh, remote Arch base VPS into Artix base. It has also been tested on virtual base Arch installations with the same 100% success rate. Currently only openrc target is supported, with runit under way.
The script makes several assumptions; some of them you may not like - make sure you read it though and adjust it to suit your needs.
Disclaimer: I can only guarantee that it will brick your system, so don't come back crying. Only the wiki guide (https://wiki.artixlinux.org/Main/Migration) is supported by Artix. This is just a convenience script for lazy advanced users who can fix a mess.