Pedzisa mutsara unotevera: Hackl akawana menduru makumi maviri nembiri paFIL World Luge Championships, kusanganisira gumi yegoridhe (Men's singles: 1989, 1990, 1997; Mixed team: 1991, 1993, 1995, 2000,
2001, 2003, 2005), gumi sirivha (Varume singles: 1991, 1993, 1995, 1996, 2001, 2004, 2005; Varume kaviri: 1987, Mixed chikwata: 1996, 1997), uye mbiri ndarira (Varume singles: 2000, Mixed chikwata: 1999).