5:16 Metal Gear Rising: Revengeance - The Only Thing I Know For Real (Samuel Boss Battle) Extended 2:27 The Only Thing I Know for Real (Maniac Mix) | Metal Gear Rising: Revengeance (Soundtrack) 2:27 Metal Gear Rising - The Only Thing I Know For Real (Cover by Little V) 9:54 The only Thing I know for real - Lass 2:27 Metal Gear Rising: Revengeance Soundtrack - 02. The Only Thing I Know for Real (Maniac Agenda Mix) 4:14 The Only Thing I Know For Real (ft Sasha DRK) [HQ Audio] from Metal Gear Rising Revengeance 3:55 The Only Thing I Know For Real | Metal Gear Rising | Cover by GO!! Light Up! 3:20 The Only Thing I Know For Real - Dragon Dual Mix (Original + Little V) 1:01 THE ONLY THING I KNOW FOR REAL 3:29 (VOCALS) The Only Thing I Know For Real - Traditional Japanese Version 9:13 Metal Gear Rising: Revengeance - The Only Thing I Know For Real (Special Edit) 2:34 Metal Gear Rising: The Only Thing I Know For Real (Cover by RichaadEB & Tre Watson) 3:29 The Only Thing I Know For Real - Traditional Japanese Version