\documentclass{article}

\usepackage{acro}

\DeclareAcroProperty{alt2}
\DeclareAcroProperty{alt2-format}

\RenewAcroTemplate[list]{description}{%
  \acroheading
  \acropreamble
  \begin{description}
    \acronymsmapF{
      \item [%
          \acrowrite{short}%
          \acroifT{alt}{/}\acrowrite{alt}%
          \acroifT{alt2}{/}\acrowrite{alt2}%
        ]
        \acrowrite{list}%
        \acroifanyT{foreign,extra}{ (}%
        \acroifT{foreign}{%
          \acrowrite{foreign}%
          \acroifT{foreign-short}{, \acrowrite{foreign-short}}%
          \acroifT{extra}{, }%
        }%
        \acrowrite{extra}%
        \acroifanyT{foreign,extra}{)}%
        \acropagefill
        \acropages
          {\acrotranslate{page}\nobreakspace}%
          {\acrotranslate{pages}\nobreakspace}%
    }
    { \item \AcroRerun }
  \end {description}
}

\DeclareAcronym{one}{ short = one , alt = two, alt2 = three, long = common description }
\DeclareAcronym{four}{ short = four , long = another description }

\begin{document}

\printacronyms[display=all]

\end{document}

