This guide explains how to find and activate five hidden buttons in Fischl (assuming a typo in the original text, correcting "Fisch" to "Fischl," a common name in gaming contexts) to unlock the Red Energy Crystal, crucial for obtaining Heaven's Rod. This fishing rod boasts impressive stats but requires significant effort to acquire.

Northern Summit Buttons Puzzle: The Northern Expedition update in Fischl introduces a challenging mountain climb culminating in a puzzle. Four Energy Crystals are needed to solve this puzzle and access Heaven's Rod (priced at 1,750,000 C$). The Red Energy Crystal, however, is hidden and requires activating five buttons across different islands.

Button Locations:

• Moosewood Island: Locate the button behind the leaderboard, near the pier. It's close to the ground, making it relatively easy to find.

• Roslit Bay: Proceed inland from the pier. Near the campsite, you'll find the Angler NPC. The button is hidden amongst the logs on the ground.

• Forsaken Shores: Head to the watchtowers on the right side of the island. One watchtower, easily spotted from a boat due to its red glow, contains the button. Climb this tower to activate it.

• Snowcap Island: This button is well-concealed. Ascend to Upper Snowcap and locate the Wilson NPC. The button is hidden within the wooden fence beside him.

• Ancient Isle: Visit the unfinished lighthouse. The final button is located on the side of the lighthouse entrance.

After pressing all five buttons, return to the Glacial Grotto and speak with the NPC near the large crystals. This will unlock the passage to the Red Energy Crystal, completing the puzzle.

Video Walkthrough (Placeholder - A video walkthrough would be included here)