Remove broken heatbreak
Broken screws or screws with damaged screw heads are typically removed with screw extractors. Since there is already a hole you could "drill" (unscrew) it out with a screw extractor, as it is counter clockwise, it is about creating enough friction to unscrew it from the threads. Beware that it is not drilling and spalling material, turn slowly.



Alternatively, a grip vice pliers may work if there is enough "meat" to clamp on.