A complex maze of interconnected corridors, Runbarrow has many hidden gadgets waiting to be discovered. Here are all the Proving Grounds floor mechanism locations in Eiyuden Chronicle Hundred Heroes.
Where to find all floor mechs in Eiyuden Chronicle Hundred Heroes
The floor mechanics for Proving Grounds in Eiyuden Chronicle: Hundred Heroes are beyond the runestone puzzles. Once you solve them (and we can show you how to solve the three runestone puzzle), instead of going to the helipad, just move in the opposite direction, and you'll find them.
When you first arrive at the Proving Grounds, you can see the control panel and a strange looking room. Activating the control panel will make the room spin, which opens up new paths to go. You can see which lanes are open if you follow the blue lines on the floor.
At this stage, you can only turn the first third of the room. Set the panel to red will open the path to the left, and following it will take you to the helipad leading to the lower room. Following the blue line will take you to three runestones and three lanes. Hitting the switches in the correct order (left-right-middle) will line up all the stones in one path so you can clear the middle path and go through.
Related: How to break Abandoned Mine barriers in Eiyuden Chronicle Hundred Heroes
Now this is the most important part. If you follow the blue line, it will take you to the helipad. However, instead of taking the heliport, walk in the opposite direction, and you'll find a glowing switch and some runestone wheels. Activating the switch will move the runestone, and you'll see a cutscene showing the second third of the room spinning as well.
Now you can take the helipad and go back to the main panel. You can turn more of the room, but you can also use the side door to access the middle part of the room without going through the main corridor. Press the main panel until you can see the middle-right lane, and then go to the first passage on the left. Exit the passage on the left to the main corridor and go to the second passage on the right in the main room.
Following the blue line will take you to the helipad, which will take you to the lower level of Proving Grounds. There, you will find another runestone puzzle, this time with four stones. You can solve this puzzle in the same way as the three-stone puzzle, by lining up all the stones in the same path.
When you pass the puzzle, go down the blue line, but don't take the helipad yet. Instead, walk away from it, and you will find another rune mechanism. Activating the mechanism will enable full chamber rotation, which is another big step in opening the door to Proving Ground.
For more related articles, check out How to open Tri-Symbol door in Eiyuden Chronicle Hundred Heroes on Pro Game Guides.
