As the battle starts, equip your MP5 and enter the scope mode. Look above the Vlad's location to see four cylinder-like wooden pipes holding the sitting-place (the square-like place that Vlad is on). Shoot the wooden pipes and they will fall out of their places. Remember to dodge Vlad's dynamite. As you shoot the last pipe, the sitting-place will fall down but Vlad is still out of your view. Look up again to see four more wooden pipes that are preventing a large pillar from falling down. Shoot the pipes out and the pillar will fall down, making Vlad move aside avoiding the pillar. After that Vlad, is in your view. Equip any desired weapon (M4 Carbine recommended) and finish him off. Note: Beware of Vlad's molotov burning bombs.