Krillin: Orange Style Tokui-Waza
Piccolo: Nemakian Style Tokui-Waza
Nail: Nemakian Style Tokui-Waza
Vegeta: Saiyan Style Tokui-Waza
King Cold: Blue Style Tokui-Waza
Frieza: Black Style Tokui-Waza
Goku: Red Style Tokui-Waza
Cell: Cell has all the Tokui-Waza Styles
Defeating Guldo
Select Gohan as you character. He gets a bonus of two power level gains in his round. Next, put all the Defense cards you have in the deck. It is crucial to stop Guldo's MP card. Then, with all remaining cards, put them into Anger cards. This should stop all of Guldo's attacks. Also, Gohan's second Personality stage makes it so his MP card defends against Guldo's attacks. If you only have one Defense card remaining, take the hits until Guldo uses himself, then block it. This may require two or three attempts. You can also use Freiza due to his power of cutting damage down by two Life cards.
Frieza Smiles card
The Frieza Smiles card is a double-edged sword. When used as the first card in combat, it stops all Energy or all Physical attacks for the rest of the round, but this affects both you and your opponent.
Hidden characters
Reach level 5 and beat Cell using a specific character as your Main Personality to unlock a hidden character. You will receive this character's Main Personality lv1-3 cards inside the booster pack after battle.
Character
How to unlock
Guldo
Beat Cell with Nail as your Main Personality
King Cold
Beat Cell with Frieza as your Main Personality
Krillin
Beat Cell with Guldo as your Main Personality
Nail
Beat Cell with Goku as your Main Personality
Piccolo (both Heroes and Villain sides)
Beat Cell with Garlic Jr. as your Main Personality
Trunks
Beat Cell with Gohan as your Main Personality
Vegeta (both Heroes and Villain sides)
Beat Cell with King Cold as your Main Personality
Miniature tournament breakdown for starting characters