documentclass[a4paper,12pt,numbers=endperiod]{scrartcl}
usepackage[utf8]{inputenc}
usepackage[T1]{fontenc}
usepackage[ngerman]{babel}
usepackage{csquotes}
usepackage[backend=biber,style=authoryear]{biblatex}

addbibresource{biblatex-examples.bib}

DefineBibliographyStrings{ngerman}{references={Bibliographie}}

DeclareFieldFormat{editortype}{mkbibparens{#1}}
renewbibmacro*{byeditor+others}{%
  ifnameundef{editor}
    {}
    {printnames[byeditor]{editor}%
     setunit{addspace}%
     usebibmacro{byeditor+othersstrg}%
     clearname{editor}%
     newunit}%
  usebibmacro{byeditorx}%
  usebibmacro{bytranslator+others}}
renewbibmacro*{byeditor+othersstrg}{usebibmacro{editor+othersstrg}}
renewbibmacro*{bytranslator+othersstrg}{usebibmacro{translator+othersstrg}}
renewbibmacro*{bytypestrg}[2]{%
  iffieldundef{#1type}
    {bibstring{#2}}
    {ifbibxstring{thefield{#1type}}
       {bibstring{thefield{#1type}}}
       {printtext{thefield{#1type}}}}}

renewcommand*{multinamedelim}{/}
renewcommand*{finalnamedelim}{multinamedelim}

renewcommand*{labelnamepunct}{addcolonspace}
renewcommand*{postnotedelim}{addcolonspace}
DeclareFieldFormat{postnote}{#1}
DeclareFieldFormat{multipostnote}{#1}

DeclareFieldFormat{superedition}{textsuperscript{#1}}

providecommand*{iflabeldateisdate}{%
  ifboolexpr{%
    not test {iffieldundef{labeldatesource}}
    and
    (test {iffieldequalstr{labeldatesource}{}}
     or test {iffieldequalstr{labeldatesource}{year}})}}

renewbibmacro*{date+extrayear}{%
  iffieldundef{labelyear}
    {}
    {printtext[parens]{%
       iflabeldateisdate
         {iffieldnum{edition}
            {printfield[superedition]{edition}%
             globalclearfield{edition}}
            {}%
          printdateextra}
         {printlabeldateextra}}}}

renewcommand*{bibpagespunct}{addcolonspace}
DeclareFieldFormat{pages}{#1}

DeclareNameAlias{sortname}{family-given}


begin{document}
nocite{sigfridsson,companion,cotton,iliad,malinowski,
        gaonkar:in,westfahl:space,pines,brandt,hyman,kant:kpv}
printbibliography
end{document}