[2] Armstrong's greatest achievement to date came at the 2007 WDF World Cup in Rosmalen, Netherlands, where she won the women' pairs title with Anastasia Dobromyslova.

Despite her successes during 2008, Armstrong was surprisingly overlooked for a place in the Zuiderduin Masters, a BDO major held in the Netherlands.

Armstrong continued her good form into 2009 and secured qualification for the Lakeside World Championship by winning the England Open.

Armstrong started her international career with her native Russia where she won a gold medal in the Ladies Pairs with Anastasia Dobromyslova.

In 2013, she made her debut at the WDF World Cup singles for Germany in Canada where she finished runner up to England's Deta Hedman.