I havn't tested this yet but this is my idea on scoring:
each target will have two invisible buttons in front of it.
button_torso and button_head
each will point to its own multi_manager that will trigger the door to open and trigger a game_score entity to add either 1 or 2 points respctivly.
if that works well i'll then start messing around with placing text on screen and keeping track of scroes with env_globals but i want to go the simple route first.