Use Windows Explorer to enter the folder where the game was installed (default location is c:/program files/davilex), then open the folder where the movie files are located. They are encoded in MPEG format, and can be played through the Windows Media Player.
Find the recharging system, then go to that room and recharge. Get missiles but do not fire them yet. Note: Get the missiles when the target is red. Get some feet in front and fire. Come back, recharge, and fire.