So I've got to the part where Maggie manages to materialise the island and you grab the plate from inside. From what i understand, after you walk back across the bridge to the 'Pit', the game should trigger a brief animation of an earthquake, and Brink calls on the Pen Ultimate to let you know he's trapped....

Only that doesn't happen for me. I've tried walking all around and back again and it's not triggering. Any ideas of what I need to do to get this moving?

EDIT: I've figured it out, apparently I didn't have all the metal plates, once I grabbed the last one it triggered and I finished the game.