So there is a puzzle in game that gives a chest and an achievement: The long way around. After i did the puzzle with the 6 pads, i looked if there was anything else behind that shield. But i found out there is simply a way around the shield.
If you want to go the chest, before the gate go left and up and you can reach it without doing the puzzle. I don’t know about the achievement, but this can’t be the intention can it? I also dont think it’s a way out, because if you touch the shield, you are teleported out.