Andriasian was awarded the FIDE Woman International Master title in 2005. She won the under-10 girls Armenian Championship in 1994 and 1995, the under-14 girls Armenian Championship in 1999 and 2000, and the under-18 girls Armenian Championship in 2001 and 2004. At the under-10 European Youth Chess Championship, Andriasian came in third place. Andriasian won the senior Armenian Chess Championship thrice in 2006, 2007 and 2011. She was also the runner-up in 2004 and 2005.
