Did you complete all of the Origami Trials? (*may include spoilers)

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As the character Ethan Mars, you have to complete a series of Origami Trials to save your son. Some, if not all of these Trials are very disturbing, and truly test the will and sanity of your character to save the last thing left to live for. When you 1st played through this game, did you complete all of the trials, or did you take a chance and solve the mystery without all of the clues! Personally I finished all of the trials except the last one! I figured I had enough info by then.