The Dink Network

I can't recall if brain 6 can be damaged, but the damage does register as long as the sprite has hitpoints, so changing the brain to 9 when the sprite is punched should work. (If you hit a brain 0 sprite 10 times, once you change the brain to 9, the sprite will receive 10x damage. It's really cool, actually!)

Regarding script interruption, one way to avoid that is to external() whatever you want to loop. Either that, or gotos in every procedure that can interrupt the movement.