HIT! Extreme

At the start of your turn you take any face-up cards in front of you and stack them face-down as your loot (this is not done on the very first turn). (page 1)

Yes — each time you reveal a card you may, if you wish, steal all cards of that same value from the other players and add them to your face-up tableau. (page 1)

Yes — stolen cards are added to your face-up cards and count toward the total; the losing rule applies based on how many face-up cards you have. (pages 1–2)

If you reveal a card whose value already appears among your face-up cards and you currently have three or more face-up cards, you immediately lose your turn and discard all those face-up cards (they are removed permanently). The exception is when you only have one or two face-up cards: you may add the duplicate and continue. (page 2)

The game ends as soon as the last card of the draw pile is revealed; players then add any remaining face-up cards to their loot, sum the values of their loot cards, and the highest total wins. (page 2)