Trivial Pursuit
34 Achievements
1,000
8-10h
Xbox 360
Gambling God
Place 10 correct bets (F&F)
30
How to unlock the Gambling God achievement in Trivial Pursuit - Definitive Guide
This has to be done in Fact & Friends mode (you can add a 2nd player from the same controller). When it's P2's turn, you'll get the chance to bet if they'll get it right or wrong. (don't choose the 'I Know It!' option as it won't count as a bet). If you're controlling P2 then it's easy to make them go the way you want. Get 10 correct bets for the achievement, doesn't need to be consecutive so don't worry if you get one wrong but you will have to get all 10 within 1 game.
I had a slight issue with this trophy. I knew I succeeded in placing enough correct bets, but it didn't trigger the trophy. I then realized that I had quit out every time I bet incorrectly, which I theorize would actually reset the count. You have to get all 10 in the same session, and they do not have to be 10 in a row, so long as there are 10 correct bets in the same game. Hope this helps.
Facts & Friends mode is a local multiplayer mode that allows players to bet on whether or not their opponent knows the answer to their questions. On 10 occasions, bet that they don't and deliberately answer their question wrong to unlock this trophy.