Nyorera kuenderera kweiyi ndima - PaFIL European Luge Championships, Gruber akahwina menduru pfumbamwe negoridhe mbiri (Varume vaviri vaviri: 2008, 2014), sirivheri ina (Varume vaviri vaviri: 2004
; Mixed chikwata: 2004, 2006, 2013), uye nendarira nhatu (Varume kaviri: 2006; Mixed chikwata: 2012, 2014).