Cream sugar, butter and eggs. Stir in vanilla, flour, salt and Hershey's syrup. Bake 30 minutes at 350° in a greased and floured 9 x 13-inch pan. Cool completely before adding toppings. To make mint topping, cream sugar, butter and creme de menthe. Spread over cake and let sit. To make glaze topping, melt chocolate chips and butter together. Let cool and spread over mint topping. Refrigerate for 15 minutes and cut into 32 pieces.