Club Olimpo
Walter Vílchez made his league debut in the Torneo Descentralizado in the 2000 season playing for Deportivo Wanka. The following seasons he played for smaller clubs Unión Minas and Sport Coopsol Trujillo. In 2003, he joined top Peruvian club Alianza Lima and was national champion with the club in 2003 and 2004. In the first half of 2005 he played with Club Olimpo de Bahía Blanca (Argentina). In the second half of 2005 he returned to Peru to play for Sporting Cristal and won the 2005 league title.