I don't know for sure but I think not. Do you've got a problem with the level Ambush at Mos Eisley. It's quite easy. Kill all the probedroids but leave the last few untill you've killed the four stormtroopers. Then go and kill the other probe droids, and than go after the bombers after the message that Mos Eisley is under attackt. That way you've got enough enemies killed for a gold medal but watch your time.