Back to the Future: The Game
60 Achievements
8-10h
PS4
Grandpa Got Served
Delivered the subpoeana to Arthur McFly.
46.1%
How to unlock the Grandpa Got Served achievement in Back to the Future: The Game - Definitive Guide
This trophy is story related, and will unlock after delivering the subpoena to your grandfather. See the trophy walkthrough in "A Bicycle Built For Two".