checked-no =>Health Refill: Between rounds, while Doc Louis is talking to you, press [-]. When the match starts back up, your energy will refill. This may only be done once per matchup. =>Regain Health: If you knock an enemy to the mat, quickly tap [1] and [2] to regain some health as he struggles to get back up. =>K.O. Recovery: It is sometime possible to avoid a K.O. by pressing [1]+[2] when the K.O. animation begins, but before Mac hits the floor. =>Little Mac's Headgear: If you lose 100 times in the single player game, Little Mac will start wearing headgear. =>Boxing Titles and Rounds: Completing the Minor Ciruit opens up the Major Circuit; completing the Major Circuit unlocks the World Circuit. * Title Defense Mode: If you complete all the standard circuits you'll be able to play against all the boxers again in Title Defense mode. They'll have new fighting styles and appearances. * Mac's Last Stand: Complete Title Defense to unlock Last Stand. In this mode, you'll fight randomly selected boxers until you lose three times. Upon the third loss, the Last Stand mode will be locked off permanently on the current save file -- you'll have to start a new game to replay it. =>Fight Donkey Kong: In Last Stand, continue to fight and defeat boxers. You'll eventually end up fighting Donkey Kong. Fighting him in Last Stand will also unlock him in Exhibition mode. =>Champion Exhibition Mode: Defeat a total of 10 boxers in Last Stand to unlock the extremely difficult Champion mode in Exhibition. Boxers will generally be able to knock you down with a single punch in this mode! =>Gallery Unlockables: A variety of audio and video clips can be unlocked. * Boxer Intros: Each boxer has an intro in both the Career and Title Defense modes. Defeat them in both to unlock their clips here. * Boxer Audio: Each boxer's audio clips can be unlocked by completing all three of their Exhibition mode challenges. * Training Mode Film: Losing to a boxer in Exhibition mode will unlock the Training simulator for that boxer. Enter the training simulator once (in the Exhibition mode menu) to view and unlock this clip. If you defeat both the Career and Title Defense modes without entering the training simulator at least once, you won't be able to unlock this clip.