Mr. Do!'s Castle

Mr. Do!, that king of arcade clowns, is in a bit of a bind - again! This time, a pack of pesky unicorns is trampling the bricked hallways of his castle. Help Mr. Do! rid his dwelling of these crafty, quick-changing (and deadly) creatures with the skillful swing of a hammer. Sometimes a quick clobber to the head will do it. Or maybe a well chosen brick knocked out from above. If you can't stop these critters, then break a hole in the floor to slow 'em down.