How do I defeat the 3 headed snake so stuck bru?

Three Headed Snake Sequence

Load up with max Wiggenweld Potions (9) and select Wiggenweld potion before leaving the area with the silver doe.

Cut scene with sword of Griffindor

[Single attacking dragon head] Dodge the single attacking dragon heads. Move to center when right or left head is striking. Throw a rock at attacking head when it is down and immediately bombard with hits. Repeat till destroyed

[Spider attack] Hit the attacking spiders with simple spells.

[Dual attacking dragon heads] When two dragon heads are striking simultaneously, dodge the dual attacking heads and watch for time when left & right heads are striking together and stand in middle (as before) and throw a rock at one of the heads when it is down. Then bombard till destroyed.

[Tom Riddle attack] Move to far left or far right behind a barrier. Tom Riddle will send out a moving red scanning spell. Stay put. Then he will send green bomb like spells. Again, stay put till they end. When Riddle moves out of the middle of the lake to the right, you move to the right, close enough to a rock pile to throw rocks at him repeatedly. He will move to the left side. Repeat with the rocks. He will go back to lake center and start again. Repeat till he is vanquished.

[Important Tip] If you die, turn off your ds and restart. [Continue %u2013 resume] It'll come back up to point in the forest with silver doe just before the cut scene