You can on ghost mode you can fly you can go under the floor you can go any where just you have to do is go to harry potter and the prizoner of azkaban directory then find defuser which is having circle on the right open then go down when you see 1= 2= 3= 4= 5= 6= 7= 8= 9= C= G= L= M= O= P= S=MoveBackward T= Z= F1= F2= F3= F4= F5= F6= F7= F8= F9=shot F10= F11= F12= Equals= Comma= Minus= Period= Slash= LeftBracket= Backslash= RightBracket= MouseX=Count bXAxis | Axis aMouseX Speed=6.0 MouseY=Count bYAxis | Axis aMouseY Speed=6.0 MouseW= None= Cancel= Backspace=Ghost PageUp= Home=CenterView | ACTOR ALIGN SNAPTOFLOOR ALIGN=0 Select= Print= Execute= PrintScrn=shot Help= A=StrafeLeft B= D=StrafeRight E= F= H= I= J= K= L= Q= Are= You= V= W=MoveForward X= Y= NumPad0=set playercontroller bZeroRoll False | set playercontroller rotation (pitch=0,yaw=0,roll=16384) NumPad1=set playercontroller bZeroRoll False | set playercontroller rotation (pitch=0,yaw=32768,roll=-16384) NumPad2=MoveBackward NumPad3=set playercontroller bZeroRoll False | set playercontroller rotation (pitch=0,yaw=-16384,roll=0) NumPad4=StrafeLeft NumPad5=set playercontroller bZeroRoll False | set playercontroller rotation (pitch=-16384,yaw=0,roll=16384) NumPad6=StrafeRight NumPad7=MoveUp NumPad8=MoveForward NumPad9=MoveDown GreyStar= Separator= NumPadPeriod= GreySlash= F13= F14= F15= F16= F17= F18= F19= F20= F21= F22= F23= F24= NumLock= LShift= RShift= LControl= RControl= Semicolon= Tilde= SingleQuote=Strafe Attn= CrSel= ExSel= ErEof= Play= Zoom= NoName= PA1= OemClear= MouseZ= MouseWheelDown=PrevSkill MouseWheelUp=NextSkill Then find delete on them when you find Delete= then change it to delete=Ghost then while playing game press delete and go where you want
On the same level as the Ghoul you will encounter Hinkypunks, these are ghost-like creatures who have one foot and a lantern. Have Ron shine Lumos Duo in their faces and when they become solid and zombie-like shoot Flipendo at them to defeat them.
When you have completed ALL the tasks and opened the chamber on the Neville and Ghoul level you can defeat the Ghoul easily by lighting Lumos Duo in it's eyes and leading it into the chamber and locking it in.
It is advised that you make a back up before proceeding as this procedure involves editing a game file. Use a text editor to edit the 'default' file in the 'ea gamesharry potter and the prisoner of azkaban(tm)system' folder. Find '[HGame.HPPageFrontend]' and look for the 'FirstLevel=HP3_Adv1Express.unr' entry and change the value of the .unr file to any of those located in the 'maps' folder.
It is advised that you make a back up before proceeding as this procedure involves editing a game file. Use a text editor to edit the 'defuser.ini' file in the 'ea gamesharry potter and the prisoner of azkaban(tm)system' folder. Find the 'Comma=' entry located near the bottom of the file and add the word 'God' so that it now reads 'Comma=God'. Start the game and press the ' (comma) key and your life will not decrease. Whenever you enter a new challenge or activity you must press that key to remain in God mode.