Daily Streak Trophy in Jeopardy!
Play 7 consecutive Daily Challenges.
How to unlock Daily Streak
Daily Challenges are ones that appear on your main menu screen as the far left selection. Once you finish one, you must wait 24 hours until the next one is available (it's based off the time on the Jeopardy! servers so advancing your system time will not help). Just keep playing them when they become available and once you finish your 7th consecutive Daily Challenge, the trophy will pop.