Have Hermione use glacius on it while its walking.Then if you do it right it will open it's mouth .It will shoot flaming rocks at you. Use glacius in it's mouth.If you do this right it will shoot it's arm at you.Use glacius on it.It will stop flaming.Use flipendo on it.It will explode.Repeat this until it is dead.P.S.stop using glacius beforeyou use it in it's mouth.P.S.S it won't work if you get hit by a rock.

use glacius until it turns blue and use flipendo on it an it will break

have hermione use the ice spell on the big monster. he will throw his arms at u freeze the arms, then when he is just head and legs use the ice spell again and he will be dead

oh u meant THAT monster. ohhhh.....oh well not my problem. ur the one who cant figure it out