In 1995 he was killed during a military operation in the Chechen village of Samashki, and was awarded posthumously the title Hero of the Russian Federation on August 25, 1995.

[1][2] During a military operation in Samashki, Adamishin's unit was surrounded by militants and pinned down by heavy fire.

During the fighting, Adamishin's squad became surrounded and formed a defensive circle.

Viktor decided to organize a breakthrough for his unit and remained behind to provide covering fire.

Adamishin was mortally wounded during the skirmish and died on the battlefield.