You go on Deathly Hallows part 2 and the level you go on is called Snapes Tears and once you finish the first part of it you should see a lock. You have to be playing as either Griphook or Bogrod for it to work.
No, Harry Potter survived.
Not all the death eaters die in Harry Potter.
Harry potter and the chamber of secrets
You need to unlock Malfoy, Voldemort, Lucius Malfoy or Quirell (Lord Voldemort) to get Avada Kedavra AKA Death Eaters
No, she was not.
A Death Eater
Hedwig
In the beginning of The Seventh Harry Potter Book, when The Death Eaters and Voldemort are chasing Harry.
Harry
No, except for mentioning Myrtle's death 50 years ago.
The final death in Harry Potter and the Deathly Hallows is the death, and thus final defeat, of Lord Voldemort.
No, he had a near-death experience but didn't die.