More than 2 levels using hierarchical taxonomy only

Works for 2 levels
Parent
--Child

We need

Parent
--Child
----Sub child

We have the term id -- unique for each term
The parent id of each term

Our working view for 2 levels

$view = new view();
$view->name = 'list_of_taxonomy_terms';
$view->description = 'Listing of all terms per taxonomy for the users';
$view->tag = 'taxonomy';
$view->base_table = 'taxonomy_term_data';
$view->human_name = 'List of taxonomy terms';
$view->core = 0;
$view->api_version = '3.0';
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

/* Display: Defaults */
$handler = $view->new_display('default', 'Defaults', 'default');
$handler->display->display_options['title'] = 'Terms';
$handler->display->display_options['use_ajax'] = TRUE;
$handler->display->display_options['use_more_always'] = FALSE;
$handler->display->display_options['access']['type'] = 'role';
$handler->display->display_options['access']['role'] = array(
  22 => '22',
);
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['exposed_form']['options']['reset_button'] = TRUE;
$handler->display->display_options['pager']['type'] = 'full';
$handler->display->display_options['pager']['options']['items_per_page'] = '50';
$handler->display->display_options['pager']['options']['offset'] = '0';
$handler->display->display_options['pager']['options']['id'] = '0';
$handler->display->display_options['pager']['options']['quantity'] = '9';
$handler->display->display_options['style_plugin'] = 'tree';
$handler->display->display_options['style_options']['main_field'] = 'tid';
$handler->display->display_options['style_options']['parent_field'] = 'tid_1';
$handler->display->display_options['row_plugin'] = 'fields';
/* Relationship: Taxonomy term: Parent term */
$handler->display->display_options['relationships']['parent']['id'] = 'parent';
$handler->display->display_options['relationships']['parent']['table'] = 'taxonomy_term_hierarchy';
$handler->display->display_options['relationships']['parent']['field'] = 'parent';
/* Field: Taxonomy vocabulary: Name */
$handler->display->display_options['fields']['name_1']['id'] = 'name_1';
$handler->display->display_options['fields']['name_1']['table'] = 'taxonomy_vocabulary';
$handler->display->display_options['fields']['name_1']['field'] = 'name';
$handler->display->display_options['fields']['name_1']['label'] = '';
$handler->display->display_options['fields']['name_1']['exclude'] = TRUE;
/* Field: Taxonomy term: Name */
$handler->display->display_options['fields']['name']['id'] = 'name';
$handler->display->display_options['fields']['name']['table'] = 'taxonomy_term_data';
$handler->display->display_options['fields']['name']['field'] = 'name';
$handler->display->display_options['fields']['name']['label'] = '';
$handler->display->display_options['fields']['name']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['name']['link_to_taxonomy'] = TRUE;
/* Field: Taxonomy term: Term ID */
$handler->display->display_options['fields']['tid']['id'] = 'tid';
$handler->display->display_options['fields']['tid']['table'] = 'taxonomy_term_data';
$handler->display->display_options['fields']['tid']['field'] = 'tid';
/* Field: Taxonomy term: Term ID */
$handler->display->display_options['fields']['tid_1']['id'] = 'tid_1';
$handler->display->display_options['fields']['tid_1']['table'] = 'taxonomy_term_data';
$handler->display->display_options['fields']['tid_1']['field'] = 'tid';
$handler->display->display_options['fields']['tid_1']['relationship'] = 'parent';
$handler->display->display_options['fields']['tid_1']['label'] = 'Term ID with parent';
/* Sort criterion: Taxonomy term: Weight */
$handler->display->display_options['sorts']['weight']['id'] = 'weight';
$handler->display->display_options['sorts']['weight']['table'] = 'taxonomy_term_data';
$handler->display->display_options['sorts']['weight']['field'] = 'weight';
/* Sort criterion: Taxonomy term: Name */
$handler->display->display_options['sorts']['name']['id'] = 'name';
$handler->display->display_options['sorts']['name']['table'] = 'taxonomy_term_data';
$handler->display->display_options['sorts']['name']['field'] = 'name';
/* Contextual filter: Taxonomy vocabulary: Machine name */
$handler->display->display_options['arguments']['machine_name']['id'] = 'machine_name';
$handler->display->display_options['arguments']['machine_name']['table'] = 'taxonomy_vocabulary';
$handler->display->display_options['arguments']['machine_name']['field'] = 'machine_name';
$handler->display->display_options['arguments']['machine_name']['title_enable'] = TRUE;
$handler->display->display_options['arguments']['machine_name']['title'] = 'Terms in %1';
$handler->display->display_options['arguments']['machine_name']['breadcrumb_enable'] = TRUE;
$handler->display->display_options['arguments']['machine_name']['breadcrumb'] = '%1';
$handler->display->display_options['arguments']['machine_name']['default_argument_type'] = 'fixed';
$handler->display->display_options['arguments']['machine_name']['summary']['number_of_records'] = '0';
$handler->display->display_options['arguments']['machine_name']['summary']['format'] = 'default_summary';
$handler->display->display_options['arguments']['machine_name']['summary_options']['items_per_page'] = '25';
$handler->display->display_options['arguments']['machine_name']['specify_validation'] = TRUE;
$handler->display->display_options['arguments']['machine_name']['validate']['fail'] = 'ignore';
$handler->display->display_options['arguments']['machine_name']['limit'] = '0';
/* Filter criterion: Taxonomy term: Name */
$handler->display->display_options['filters']['name']['id'] = 'name';
$handler->display->display_options['filters']['name']['table'] = 'taxonomy_term_data';
$handler->display->display_options['filters']['name']['field'] = 'name';
$handler->display->display_options['filters']['name']['operator'] = 'word';
$handler->display->display_options['filters']['name']['exposed'] = TRUE;
$handler->display->display_options['filters']['name']['expose']['operator_id'] = 'name_op';
$handler->display->display_options['filters']['name']['expose']['label'] = 'Name';
$handler->display->display_options['filters']['name']['expose']['operator'] = 'name_op';
$handler->display->display_options['filters']['name']['expose']['identifier'] = 'name';
$handler->display->display_options['filters']['name']['expose']['remember'] = TRUE;

/* Display: Page */
$handler = $view->new_display('page', 'Page', 'page_1');
$handler->display->display_options['path'] = 'taxonomy_terms/%';