when you see Quirrel run and collect all the beans out the buckets then when he fires his spells at you hide behind a pillow and they crumble after 2 hits. Do this to them all then you fall to another room where you have to move the mirrow to reflect Quirrles spell hit him 6 times then he throws rocks at you make then hit the mirriw to break and continue reflecting the spell to kill him.
For the 'Coooooooler Ending' you got to do two things.
1 --Collect all 15 Folio Magi cards, then Ron will give you the last one.
2 -- Attain a perfect House Point score of 600, to have Griffindor win the house cup.
in the beginning of the game find hagrid and push select while talking to him a secret map will appear and it shows how to get to the secret dungeon.
There are some more secret rooms in the hogwarts grounds, Just look for the strange looking walls.
When you're facing Voldermort in the 2nd room,use Flipendo against his fireballs/hide behind the mirror and they will dissapear.If you use Flipendo on the moving blocks,they will turn into a Bertie Bott's Every Flavour Bean.
During gameplay, press Select, B, A, B, A, B, B, A, A
press b 12x and press a 13x and you will have all your homework for Snape for getting all the herbs