Rubuta ci gaba don wannan sakin layi - Shekaru hudu bayan fafatawa a wasannin Olympics na farko, Advena ya cancanci shiga tawagar Ukraine ta biyu, a matsayin dan shekara 24, a Wasannin Olympics na bazara na 2008 a Beijing. Ya gama na shida a tseren 200 m butterfly daga Gasar Turai
a Eindhoven, Netherlands, ta share lokacin shigar FINA A-daidaitaccen lokaci na 1: 57.04. A rana ta biyu ta wasannin, Advena ta kalubalanci wasu 'yan wasa bakwai a cikin zafin jiki biyar na 200 m freestyle, gami da Darian Townsend na Afirka ta Kudu da Nimrod Shapira Bar-Or na Isra'ila. Ya hau zuwa matsayi na uku ta hanyar kashi ɗaya cikin goma daga Townsend a cikin lokacin rikodin Ukraine na 1: 48.18, amma ya rasa wasan kusa da na biyu ta hanyar raunin 0.37, yayin da ya sanya na ashirin da uku a gaba ɗaya a cikin wasan farko. A cikin 200 m malam buɗe ido, Advena ya sanya lokaci na 1: 56.24 don samun iri na goma sha huɗu a farkon safiya. Sannan, ya maimaita aikinsa daga Athens tare da lokacin goma sha biyar na 1: 56.64 a wasan kusa da na karshe.