[1][3] Having pursued the sport since the age of eleven, Issachenko trained as a member of the shooting team for Dynamo Sport Club in Almaty under his personal coach and two-time Olympic bronze medalist Vladimir Vokhmyanin.

[1] Issachenko qualified for the Kazakh squad in pistol shooting at the 2004 Summer Olympics in Athens, by having achieved a minimum qualifying score of 560 and securing a berth with a silver-medal effort in free pistol from the Asian Championships in Kuala Lumpur, Malaysia.

[1][4][5] In the men's 10 m air pistol, held on the first day of the Games, Issachenko shot 576 points to finish in a four-way tie with Italy's Vigilio Fait, Japan's Masaru Nakashige, and Germany's Abdulla Ustaoglu for twenty-third place.

[7][8] At the 2006 Asian Games in Doha, Qatar, Issachenko fired a score of 570 to pick up a bronze medal in the 25 m standard pistol, just a point away from South Korea's Park Byung-taek.

[3][9] This biographical article relating to sport shooting in Kazakhstan is a stub.