King of Tokyo: Duel

You may roll all 6 dice on your first roll, plus up to 2 extra dice if you discarded Dice tokens or have a power (never more than 8 dice); the very first player on their very first turn rolls only 5 dice. (p.6)

Yes — before each new roll you may take back any dice you previously set aside and include them in the next roll. (p.7)

Each Smash (paw) in your final Roll causes your Rival to take 1 damage (lose 1 heart) per paw; if that damage reduces their last heart to a skull you immediately win. (p.7)

For each triple of ★ or ☠ you pull the corresponding marker 1 space toward you, and for each additional matching symbol beyond the triple you pull it 1 extra space (e.g., three = 1 space, five = 3 spaces). (p.8)

A Buzz token must be placed on top of one or more spaces of any track but not on another Buzz token or a space already covered by a ★ or a marker; Buzz token spaces that lie entirely in the Spotlight Zone count as Spotlight spaces, and a Buzz token on the Victory space still makes that space a Victory space. (pp.10, 11)

There are two King Buzz tokens and when The King's Rival pulls a ★ or red marker, its movement stops immediately if it reaches a King Buzz token (any remaining movement is lost); if a marker starts its movement on the King token it moves normally. (p.15)