Frank: Beat the game three times with three different Capcom characters.
Zero: Beat the game six times with six different Capcom characters.
Tekkaman Blade: Beat the game three times with three different Tatsunoko characters.
Joe: Beat the game six times with six different Tatsunoko characters.
Yatterman-2: Beat the game with the previously unlocked characters. You can use Frank and Tekkaman Blade towards getting Zero and Joe unlocked, which saves time.
Note: Whoever scores the last hit on Yami is the one whose ending you unlock and is considered the one who has beaten the game. Make sure to swap out if you are using the same character as a partner before defeating Yami.
Hint: To speed up the process, set the games difficulty setting to the lowest available and increase your handicap to do more damage.
After beating the game in Arcade Mode hit any button (but +) to start a biking mini-game with the credits. Collect all of the golden letters to spell out 'Thank you for playing' and you unlock the Extra Game of Tatsunoko vs Capcom Ultimate Shooters. You can also beat the Arcade Mode with Roll to unlock her as the mini-game character were you can fly around instead of biking and jumping for the letters.
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