Arzú began his professional career with Liga Nacional de Honduras side Platense in 2005.
In February 2009, he went on trial to the Chinese side Beijing Guoan alongside his compatriot Hendry Córdova, but the club decided not to sign them.
[1] Arzú went on trial with D.C. United in early 2010 in hopes of securing a contract with the Major League Soccer club.
Arzú was part of the U-23 Honduras national football team which was coached by Colombian trainer Alexis Mendoza and later by Gilberto Yearwood.
Arzú made his senior debut for Honduras in an October 2010 friendly match against Guatemala and has, as of July 2012, earned a total of 3 caps, scoring no goals.