Career
Hetényi began playing hockey by Dunaferr. After coming through the youth ranks of the team, he switched to Ferencvárosi TC and later Alba Volán Székesfehérvár, making his debut for the Hungarian champions in 2004. The breakthrough in his career came in the 2007–2008 season, when thanks to his outstanding performances, he managed to supplant first choice keeper Krisztián Budai.
Hetényi contributed to the success with a shutout against Croatia.
Alongside other three Hungarians, he was listed for the 2009 KHL entry draft, but in the end he was not picked by any club In 2010 he travelled to Slovenia for the Division I World Championship already as the starting goalie of the national team, and despite Hungary missed out the promotion after falling short to the hosts, Hetényi topped the goalkeepers" list both in Gaelic Athletic Association (129) and in saving percentage (954), making two shutouts in the process.
Foreign the 2011-2012 season, Hetényi joined the Finnish team Jokerit of the league Master of Science-liiga. In the 2012-2013 season, Hetenyi spent his only season in North America in the ECHL with the Cincinnati Cyclones and the Orlando Solar Bears.
Unable to establish himself on the ice and making headlines off the ice, Hetenyi opted to return to Europe in signing with Tappara Tampere of the Finnish Liiga.
During the 2013-2014 season, after playing on loan in the Mestis with LeKi, and unable to make an appearance with Tappara, Hetenyi made a return to familiar surroundings in his original club, Alba Volán Székesfehérvár on 19 November 2013. Best Junior Player of the 2005, 2006.