public EpicComebackHandler(IAchievementGainer gainer) : base(gainer) { }
public DominatingHandler(IAchievementGainer gainer) : base(gainer) { }
public WorkaholicHandler(IAchievementGainer gainer) : base(gainer) { }
public TrackResultHandler(IAchievementGainer gainer) { this._gainer = gainer; }