Nyorera kuenderera kweiyi ndima - PaFIL European Luge Championships, Gruber akahwina menduru pfumbamwe negoridhe mbiri (Varume vaviri: 2008, 2014), sirivheri ina (Varume vaviri: 2004; Chikwata chakavhenganiswa: 2004, 2006
, 2013), uye nhatu dzebronze (Men's doubles: 2006; Mixed team: 2012, 2014).