A few ?'s

ok, in the level editor, how would I get brea to animate her face to screaming as she drops into the water or lava , and how to I get a level to end when a certain enemy is beaten? ( like a BOSS) 1 more thing, I saw a level with gish attached to a ball by a chain, how to I get Gish to be an anchor point? A.S.A.P. plze!!!