This page has info on the Free Tier from the 2nd week of the Blockbuster Challenges in Fortnite Battle Royale.
Instructions
You can only find this free battlestar after unlocking the At Last... I Am Free Loading Screen.
This is done by completing two Blockbuster Challenges which entails completing all Weekly Challenges of any two weeks in Season 4.
Puzzle
This is the At Last... I Am Free Loading Screen for reference:
Scribbled on the Prison wall, you can see the letters A3, A4, B3, B4 which hint at the location of the hidden battlestar.
Solution
The Blockbuster week 2 hidden star location is found between Haunted Hills and Snobby Shores, west of Pleasant Park, close to the shore.
See screenshot and maps below to help find the location of the secret tier.
Screenshot
Map
Strategy Guide/Tips
- You can only locate the secret battlestar after you have unlocked the At Last... I Am Free Loading Screen.
- There is a bug where sometimes the battle star does not show up. If that happens try logging out of the game, then equipping the At Last... I Am Free Loading Screen in the Locker as the active loading screen, and then trying again to go to the location.