He played in his first season 25 games scores 15 goals for Konkola Blades and joined then in February 2007 on loan to AS Marsa, he played sixteen games and scores two goals for the Tunisian Ligue Professionnelle 1 club
He joined then in June 2008 back to Konkola Blades and was then loaned out on 2 September 2008 to French Ligue 2 club LB Châteauroux who for one year
He turned then in July 2009 back to AS Marsa who played between 21 October 2009 and was then released from AS Marsa, he played in his second stint only two games in the Tunisian Ligue Professionnelle 1
On 25 July 2011, Felix Sunzu became one of Simba’s most expensive signing this season after completing a 35,000 US dollar (about 50m/-) move from Al-Hilal of Sudan recently
Sunzu made his debut on 28 January 2009 in the Africa Cup of Nations (AFCON) against Cameroon national football team in the 2008 Africa Cup Of Nations in Ghana and only has AFCON appearance
He is the son of Konkola Blades goalkeeping legend Felix Sunzu Sr and is the older brother of Lille defender Stoppila Sunzu and also has a younger brother named Jackson who plays for Konkola Mine Police