You are going to need at least two extra controllers, since Quiz Mode does not utilize 'Hot Seat' mode. Long Quiz have 80 questions, 5 rounds with 16 questions in each of the rounds.
Make sure that Player 1 in the game is signed in as your main account. Your 'friends' do not have to be signed in. Now place the two extra controllers in front of you, that way your able to press the buttons to choose an answer when your 'friends' turn comes around.
Now when it is your turn, try to answer your questions correctly and when it is your 'friends' turn purposely answer those questions wrong, since letting the timer run out takes to long. The only thing that will make this process long is when you have to place bets for your 'friends'.
Recommend you try and answer as many questions correctly to earn at least 4000 points or high to unlock Quiz Titan, to minimize your time playing this game.
NOTE: You cannot finish the game with a negative score to unlock Counter-Intelligence and get this achievement. Even if you make your negative score less than your friends, you still will not win the game. You have to at least have a positive score to unlock this.