LEGO Harry Potter: Years 1-4 - 'Role Reversal' Achievement/ Trophy

Welcome everybody to my LEGO Harry Potter: Years 1-4 guide series, where I'll be covering everything there is in LEGO Harry Potter: Years 1-4, including story completion, free play collectables, and everything else!
This one will cover the 'Role Reversal' Achievement/ Trophy, which simply requires you to defeat Harry Potter in the graveyard during Year 6 Level 6, 'The Dark Lord Returns', as Lord Voldemort.
A link to my full LEGO Harry Potter: Years 1-4 playlist:
• LEGO Harry Potter: Yea...