Dhameystir weedha soo socota: Demchenko wuxuu sidoo kale ku guuleystay siddeed billadood tartanka FIL European Luge Championships oo leh afar dahab ah (Ragga keli ah:
2006, 2010; Kooxda isku dhafan: 2012, 2014), laba dahab ah (Nin kali ah: 1996, 2008), iyo laba naxaas ah (Ragga laba-labo ah: 1996; Kooxda isku dhafan: 2013).