The Challenge: Cutthroat

• Gas Problems: Teams have to assemble a five-layered puzzle, and each puzzle has different diagrams that are locked in five separate boxes. In order to unlock the boxes, players have to enter a gas chamber in pairs, and memorize combinations of codes and letters that will unlock the boxes containing the diagrams. The first team to correctly assemble their puzzle together wins. (Note: Ayiiia was prohibited from entering the gas chamber due to a medical condition, though she could still help out with assembling the puzzle. This resulted in one other girl from the Grey Team being forced to enter the gas chamber twice.)[2]
  • Winner: Grey Team
• Brain Buster: Players from each team are suspended upside down from ropes in front of the Průmyslový palác in Prague, and have to transfer color-coded beer steins from one end of a course to another by swinging toward their team members, and having their teammates place the steins on color-coded pedestals. The team that transfers the most beer steins within a 15-minute time limit wins. (Note: Since there were eight ropes present and ten players from the Red and Grey teams, those teams had to sit out two players each.)[5]
  • Winner: Blue Team
• Bed Head: A series of five beds is suspended from a platform 40 feet above the water, and players from each team have to jump one-by-one from bed to bed, with each bed decreasing in size from start to finish. Once an entire team has landed on the same bed, the process continues until each team member has landed on the last bed at the end of the platform. Players are disqualified if they fall into the water, or if one player is touching their bed with their hands when a teammate jumps to join that player on the bed. The team that makes it to the last bed with the fewest disqualifications and in the fastest time wins.[6]
  • Winner: Red Team
• Bottleneck Stampede: Players from each team have to push their way simultaneously through a giant obstacle course, with each obstacle creating its own "bottleneck." The first team to get all their players across a finish line wins.[3]
  • Winner: Red Team
• Surf's Up: Teams jump onto a platform that is hanging from a side of a cliff, 40 feet above water. Teams jump onto a "flying surfboard" in pairs, and players have to "surf" as far as possible before falling into water, then swim around two buoys, and ring a bell once they reach the other side of the lagoon. The team with the fastest average time wins.[7]
  • Winner: Grey Team
• Sky Hook: Players from each team have to climb onto a series of metal rings that are hanging from a platform suspended high above water. Players have to pass basketballs from one teammate to another until the player closest to the basket can shoot basketballs into a basket that is also hanging from a platform. Each player has to be on a ring before any balls can be transferred from player to player. A team loses one ball for each player that falls into water. Each team has 10 basketballs and a 20-minute time limit to shoot as many balls into a basket as possible. The team that makes the most baskets in the fastest time wins.[8]
  • Winner: Grey Team
• Gimme a Hand: Teams have to walk on a tightrope suspended high above ground, from one nine-story building to another at Prosek Point in Prague. Players try to advance on the tightropes in pairs, with their hips and ankles attached to their partner, and have to use overhead ropes to guide them on the tightropes. The team with the most players advancing from building to building in the fastest time wins.[9]
  • Winner: Blue Team
• High Ball: Teams have to transfer and balance balls uphill in pairs, on a ball carrier that resembles an oversize martini glass with a flat lid. Two players have to hold the ball carrier while one player loads a ball to the top of the ball carrier, and each pair of players has to deposit balls into a high basket at the top of the hill, using the ball carrier. The team that transfers the most balls into their basket within a 90-minute time limit wins.[4]
  • Winner: Grey Team
• Riot Act: Players have to knock players from opposing teams off a square dirt platform and into a mud pit, using glass riot shields. The challenge is played in two rounds: guys vs. guys and girls vs. girls. A team is still in the game as long as one teammate is still in the platform. If there are two different winners after each gender has been knocked out of the platform in each round, one player from each winning team will face off in a head-to-head match, in which the last player standing wins the challenge for their team and well as an automatic bid to the final challenge.[10]
  • Winner: Grey Team

• Handcuffs: Players have to wrestle rings out of their opponent's hands. The first player to wrestle rings out of their opponent's hands five times wins.[2][8]
  • Played By: Brandon vs. Derek, Camila vs. Emilee, Brandon vs. Derrick & Emily vs. Melinda
• Back Up Off Me: Players are tied to each other, back-to-back, and have to drag their opponent to knock over their own barrel. The first player to knock over their own barrel twice wins.[4][5][10]
  • Played By: Brandon vs. JD, Cara Maria vs. Mandi, Johnny/Tyler vs. CT & Theresa/Tori vs. Tina
• Die Hard: Players have to stand, kneel on and roll oversize dice, without any body parts touching the ground. The players have to match the number that T. J. Lavin rolls prior to the Gulag. The first player to roll their die into a designated square with the matching number facing up wins.[6][9]
  • Played By: Eric vs. Vinny, Dan vs. Dunbar & Camila vs. Laurel
• Swat: Players are chained by their necks at a table, and have to slap each other in the face with fly swatters (while wearing protective goggles). After multiple rounds of "swatting", players have to hold up a bucket filled with dirt with one arm, while continuing to slap their opponent in the face with fly swatters. The opponent wins if a player drops their bucket to the ground.[3]
  • Played By: Katie vs. Ayiiia & Luke vs. Eric
• Pole Me Over: Players have to grab a pole, and push their opponent backwards toward their own barrels. The first player to knock over their opponent's barrels twice wins.[7][11]
  • Played By: Brandon vs. Ty, Camila vs. Katie, Derrick vs. Tyler & Emily vs. Paula

The final challenge begins with each team sprinting to the first checkpoint, "Seeing Spots," in which each team has to designate one player to stand in front of a wall containing five white targets, and one teammate has to hit each target with a paint ball gun before advancing. The next checkpoint is "So Tired," in which teams have to roll oversize tires on the tarmac. The next checkpoint is "Down & Dirty," in which players have to slide through an obstacle course containing a dirt pit. At the "Free Ride" checkpoint, one player from each team has to lie on a stretcher while their teammate carries them to the next check point. (Note: Since the Blue Team only had two members — Emily & Jenn, they instead carried a mannequin on the stretcher.) At the "Hard Wood" checkpoint, each team must transfer a pile of wood to the top of a hangar in a designated area before advancing to the "Sign Language" checkpoint, in which each team has to memorize the placement of a sign post containing Czech road signs, then crawl through an obstacle course through mud and under barb wire, then swim through a lake. After swimming through a lake, each team has to slide a series of Czech road signs through a pole to duplicate the sign post from the earlier "Sign Language" checkpoint. If a team slides in each sign correctly, they can advance, otherwise, they have to return to the original "Sign Language" checkpoint. The final stretch involves a sprint to the top of a castle named Bezděz.[11]

• The Challenge: Cutthroat Winner: Red Team

• The Red Team contestants in the final challenge were Brad, Dunbar, Tori and Tyler.
• The Blue Team contestants in the final challenge were Emily and Jenn.
• The Grey Team contestants in the final challenge were Abram, Cara Maria, Laurel, Luke and Sarah.

Teams

     The contestant is on the Red team.

     The contestant is on the Blue team.

     The contestant is on the Grey team.

Competition

     The contestant's team won the competition.

     The contestant's team did not win the final challenge.

     The contestant's team won the challenge and was safe from the Gulag.

     The contestant's team lost the challenge, but the contestant was not chosen for the Gulag.

     The contestant was chosen for the Gulag, but did not have to compete.

     The contestant won the Gulag.

     The contestant lost the Gulag and was eliminated.

     The contestant was disqualified in the Gulag and was eliminated.

     The contestant withdrew from the competition prior to the Gulag.

     The contestant was removed from the competition due to illness/injury.

The Challenge: Cutthroat Reunion was aired after the season finale on December 15, 2010, and was hosted by Maria Menounos. The cast members who attended the reunion were Luke, Sarah, Brad, Tori, Paula, Tyler, Dunbar, Derrick, Emily, Laurel, Abram, Cara Maria, Eric, Johnny and Jenn.[12]