Nat Geo Quiz Wild Life

Ok, I'll first define what they mean with 'each leaderboard'. There are 6 categories of leaderboards, but you only have to be at the top of 5 of them. The categories are:
- Amazing Planet
- Dangerous Encounters
- Aquatic Life
- Predators vs. Prey
- Quest

Each categorie has a short (40 questions), a medium (60 questions) and a long (80 questions) leaderboard. You have to do them all (13 leaderboards in total).

You can select the difficulty that you'd like to do it on. I'd recommend to do it on easy after you've completed the quest because you would know a lot of the questions by then and you will also be at the top of the 'quest'-leaderboard (so only 4 more categories/12 leaderboards to go).

As phatal1ty pointed out in the comments below....you can't do this at the same time when you're going for the multi-team-achievements. You have to do this solo.

As destinee ehgc pointed out in the comments below....the scores you need to beat are 3,000 on short, 4,000 on medium and 5,000 on long.