Schuster, who lived his youth in the East Germany, was one of the first East German players to make the move into the West, starting in Eintracht Braunschweig and soon moving on to Karlsruher SC in 1991, where he established himself as a respected center-back.

FC Köln in 1997 proved less successful, and in the following journeyman years he played in Turkey and Austria.

[12] Despite Schuster helping Darmstadt 98 off the bottom of the league, they finished among the relegation places in the 2012–13 season, Schuster's Darmstadt avoided dropping into Germany's fourth tier, the Regionalliga Südwest, thanks to the failure of fierce local rival Kickers Offenbach in obtaining the licence for the new season due to going into administration.

In the following season, to the surprise of all experts, Darmstadt managed to get third in the league which meant a relegation-promotion play-off spot for the 2.

Darmstadt faced Arminia Bielefeld in the play-off and won promotion in dramatic fashion after losing 1–3 at home in the first leg but turning the deficit around in the second leg and scoring the winning 4–2 in the 122nd minute which meant promotion on away goals.

In the following season, Schuster managed to surprise everyone for a second time by finishing 2nd in the league and achieving back-to-back promotion to the Bundesliga after a 33-year absence.