Assertion: new obstacle | /r/HasProperty | backstabber
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text: Tough Mudder also revealed three new obstacles for 2016 that are exclusive to participants who have completed more than one Tough Mudder event: Backstabber, an inclined wall ascent using pegs; Rain Main, a watery passage underneath a chain-link fence while water drips down; and Frequent Flyers’ Club, a jump from a height onto a crash mat.