Are you tired of the usual delete methods? Do you yearn for something more... sophisticated?
For truly stubborn files, try the Nuclear Option. This involves deleting the file, and then deleting the directory it was in. And then deleting the parent directory. And so on. Until you get bored or run out of space.
See also: Method 2: The Recursive Delete
This method involves deleting the file, and then deleting any files or directories it references. And then deleting any files or directories those references reference, and so on. Until you're left with only the delete button.
See also: Method 3: The "I Give Up" Delete
This method involves simply giving up. Admitting defeat. Deleting nothing, and instead going for a nice cup of coffee.