Each time the beast will throw something back at you. avoid it and attack back at it. repeat this many times until he is damaged.
You find all the ingredients to the potion that is in a gold cauldron by Harry's bed.
Talk to the portrait on the south side of the room.
Use Lumos or Lumos Solem to get past the thorns, they burn the thorns down.
One of the men has a shovel, so you use him to get past this level.
You have to kill him or cast a spell on him to get past him.
You have to get the troll to smash the boulder up so that you can carry on progressing on the game Lego Harry Potter years 1-4.
you need to be a dark wizard then use wengardium leviosa on the object
To beat the dragon, you have to look on Youtube and watch walkthroughs on how to do it.
One of the men has a shovel, so you use him to get past this level.
Talk to the portrait on the south side of the room.
The bathroom door isn't available, it's just there to add more detail to the scenery of Lego Harry Potter.
Harry could use the cloak of invisibility. if Filch captures Ron, you could curse Mrs. Norris