Here’s very easy way to get this achievement. Takes no skill at all and a little bit of reflexes.
The way to earn this achievement is to finish round 3 of Jack Attack with maximum possible score - All correct answers, no missed answers, all answered very quickly for maximum +1000 bonus.
Start up a game of Jack Attack with 2 players. It can be 2 PC, 2 browsers, 2 tabs, 2 smartphones, whatever. Play the game however you want until Round Three - Jack Attack starts.
Now the game will give you a category and 6 choices, 2 at a time. Both can be correct, one can be correct, or none can be correct. What you will do is P1 will choose every thing, P2 will choose only the correct one in the following manner.
1. As soon as two choices show up, press start (hamburger button) on the controller to pause the game.
2. Choose both on P1.
3. Unpause and immediately re-pause the game.
4. Correct answers will change to green and incorrect answers will change to red on P1’s screen.
5. On P2 side choose ONLY the correct answer.
6. Unpause the game and go to step 1 for 2 more answers.
Keep repeating this until the round is over. If you made no mistakes, and if you paused quickly enough. (The game time is completely stopped when it’s paused, so you can take as long as you want while paused and still get max 1000 bonus as long as you didn’t take too long to press the pause button.)