Lachuer began his career in the 1992–93 season with US Créteil-Lusitanos in Ligue 2 the second tier of French Football, making 31 appearances and scoring five goals.

1998–99 saw Lachuer move to Paris Saint-Germain,[2] where he endured a rather disappointing season, failing to live up to the standards he had set himself in the previous two years.

The following season he contributed four goals as Auxerre won the Coupe de France, their first major honour since completing the League and Cup double in 1995–96.

After considering offers from AS Nancy, OGC Nice, Le Mans UC72, AS Saint-Étienne and clubs in Italy and the United Arab Emirates, he opted to sign a one-year deal with Troyes.

Lachuer remains a popular figure in French football and is widely regarded by many fans, as one of the best players never to appear for Les Bleus.