Dee ihe na-aga n'ihu maka paragraf a - Demchenko meriri ọla asatọ na FIL European Luge Championship na ọla edo anọ (Ndị nwoke: 2006, 2010; Mixed team: 2012, 2014), ọlaọcha abụọ (Ndị nwoke: 1996
, 2008), na ọla nchara abụọ (Ndị nwoke na-agbakọ: 1996; Mixed team: 2013).