It's a very glitchy quest. Just try and try again. Get quest > Kill all first world bosses > go back to quest giver. If it works you'll get an item...if it doesn't, join a new game and repeat.
Added (2009-12-29, 3:38:17 Am) --------------------------------------------- = =cant eh , i already kill all boss in first world ....orge and hydra also? but i also kill already= =
it look strong but can told need kill which 6 secret hero?worm lord?tri mage?hydra or orge king?