MarsSeed [1] filed a deletion request for barbarian [2]: Ababdoned package from 2020; source tarball hosted in AUR repo; no upstream URL.
A commenter linked one possible GitHub source in 2020, which has been abandoned since that year, and it seem like a student project, with only 59 commits. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/barbarian/
