General combat skills, as well as the ability to track down his targets.
His body is almost entirely cybernetic. It grants him improved physical abilities (strenght, reflexes, eyesight, etc.) It also allows him to control his equipement and to have weapons directly integrated into it.
His employer the Meiwes und Steiner industrial corporation provides him with advanced experimental weaponry. His exact loadout depends on the mission, but most proeminent among his weapons are his plasma sabers, as well as the Graviton Beam Emitter, an extremely powerful handgun. He also has suits of armor that he might wear if he needs extra protection