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The Loop (Games)
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It's Not a Door... it's a Portal! is an achievement in Plants vs. Zombies: Garden Warfare 2 that was added in the Trials of Gnomus DLC. To earn it, the player must enter the Mystery Portal inside the Town Hall and complete three matches inside it.

It's Not a Door... it's a Portal! icon in the Xbox One version
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Trials of Gnomus | It's Not a Door... it's a Portal! · The Secret of Secrets · This is Craaazy! · Somewhere Over the Rainbow · Alright Meow · Open the Door Get on the Floor · Boss Battle · Boss Battle Specialist · Boss Battle Boss · More Secrets? · Team Player · Together we Win |
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