This achievement is for completing episode 1, which contains 12 achievements.
1. Déjà Marty
2. Doc's Legacy
3. Fate In Flux
4. Back In Time
5. Hi Bob!
6. Hello, Young Friend
7. A Plausible Explanation
8. Junior Bootlegger Badge
9. Grandpa Got Served
10. Fuel Master
11. Jailbreak!
12. A Bicycle Built For Two
These are the order I got them in, but it might be possible to get "Hi Bob!" & "A Plausible Explanation" anytime before you go to Doc's lab while you're running around the town square.