During his time at Quilmes the club endured one of their worst seasons finishing bottom of the table with only 21 points. Despite the weakness of the team Luna managed to score seven goals in the Clausura 2007 tournament, bringing him to the attention of Elche and prompting his move to Spain during the June–July 2007 transfer window. During the Clausura 2009 Luna scored 11 goals, nearly half of Tigre's 24 and helped them to qualify for the Copa Sudamericana 2009. LDU Quito signed the Argentine forward "El Chino" on a for $3m from Argentine side Club Atlético Tigre.
On March 17, 2011 in a match versus Peñarol, Luna scored the 12,000th goal in the history of the Copa Libertadores.