This extension helps you to absolutely delete false or bad orders. In addition, this extension also deletes other details with order like Invoices, Credit Memos, Shipment.
Note : Please pay your attention, this module need a little customize to work well with custom Admin URL (default is http://www.yourwebsite.com/index.php/admin)
Please change line 31 in app/code/local/Halo/DeleteOrders/etc
change to :