Demchenko akahwinawo menduru sere paFIL European Luge Championships negoridhe ina (Varume vega: 2006, 2010; Chikwata chakasanganiswa: 2012, 2014), sirivheri mbiri (Varume vega: 1996
, 2008), uye maviri bronze (Varume vaviri: 1996; Mixed timu: 2013).