Kammala jumla mai zuwa: Ara ya shiga kungiyar 'yan wasan tseren Armenia ta tseren nauyi wanda ya fara gasar a nauyin kilo 77. A Gasar Cin Kofin Duniya ta 2006 a Santo Domingo, Khachatryan ya zira kwallaye 357 kg kuma ya lashe lambar tagulla. Khachatryan ya lashe lambar azurfa a gasar
2007 Gasar Zakarun Turai a Strasbourg tare da jimillar kilo 361, wanda ya zo ne kawai a bayan ɗan'uwansa Gevorg Davtyan. Ya maimaita lambar azurfa a shekara mai zuwa a gasar zakarun Turai ta 2008 a Italiya, inda ya zira kwallaye kilogiram 1 a bayan wanda ya lashe lambar zinare. A wannan shekarar, ya tafi wasannin Olympics na bazara na 2008 a Beijing, inda ya gama a matsayi na bakwai. Motsawa zuwa rukunin kilo 85 a cikin 2010, Khachatryan ya ɗaga kilo 368 a gasar zakarun Turai ta 2010 don lashe lambar azurfa ta uku ta Turai. Daga baya a wannan shekarar Khachatryan ya yi gasa a Gasar Cin Kofin Duniya ta 2010, inda, bayan ya lashe lambar zinare a cikin kamawa, ya sami mummunan rauni a hannu kuma an tilasta shi ya fice daga gasar. Khachatryan ya yi gasa a Wasannin Olympics na 2012, amma ya kasa kafa jimillar.