The conclude incursion button SHOULD NOT EXIST
Having a button that kills you is hostile game design. There's an exit button with a confirmation screen during every floor of the incursion. There's not only no need for a conclude incursion button, it's hostile game design that has killed runs for probably every player who's played the game. Remove the conclude incursion button. Just have a next floor button. Set the number of floors to the max for what rewards are available (ex: 15, 25, 30).