Rules Question: Heroic Leap card w/ multiple hunters in combat
Having never played the game before but reading up on the rules since I recently purchased the game, it's my opinion the heroic leap card effects the single hunter. My reason for this is specifically the word 'you' on the card. In my gaming experience "you" generally means the individual player who triggered the effect. If the card was intended to end the entire combat with any and all hunters the card would suggest that. In this case heroic leap is taking the individual hunter out of the fight.
Having watched a lot of reviews and some game play videos Dracula is in a lot of trouble if he's getting ganged up on. If it was a 2 on 1 fight then heroic leap would make the fight 1 on 1 which is more advantageous for Dracula as he would not have 1 automatic hunter card trigger against him each round.
Someone else may have a different opinion but I intend to play the card that way when I get my copy unless I hear otherwise.
Assuming you've related the exact wording of the card, then that's how I'd play it - "instead of resolving combat". You don't do combat - at all - regardless of how many hunters are present. Rules-as-written.