During the actual hunt, the Iron Cheer Challenge was an activity that teams could complete in order to get a free answer. Below are the instructions that teams received.

IRON CHEER CHALLENGE

Today we are having our IRON CHEER CHALLENGE! You will have 60 minutes to prepare a cheer routine. Your routine needs to satisfy the following:

You need to involve at least half of the members of your squad.
The routine needs to last at least 45 seconds.
We need to deem you energetic and enthusiastic enough.
You need to provide adequate music (we may request a specific type).
We may also request your cheer (that is, the words) to be about a specific theme.

In addition, we will give you four more constraints. When you are ready to start the challenge, send someone to HQ. We will give you various extra constraints, and you will need to choose four among them. Then your 60 minutes will start to run. When you have prepared your routine and you are ready to perform, call HQ.

If you fail the challenge, you may try again, but you will have to start from scratch with a different set of contraints, and you need to wait until the 60 minutes have passed to receive your new set of constraints.

If you succeed, you will earn a free answer. The free answer can be used on any regular puzzle. To be used on a metapuzzle, you need to have solved more than half of the puzzles that feed onto that metapuzzle, and additional restrictions may apply. You can save the free answer and cash it at any time. Call HQ when you want to cash it.

Good luck!

GOOOOOOOOOOOOOOOOOOOOOO CHEERCAMP!

When teams got to HQ to start their challenge, they got two constraints of each type selected "at random" (i.e., selected by Alfonso to make the combination humorous) and had to choose one out of each pair. Some of the routines we got to see were pure poetry.

Constraints of type 1

You need to use Bollywood music for your routine.
You need to use folk dance musics for your routine.
You need to use heavy metal music for your routine.
You need to use music from a Disney movie for the routine.
You need to use a children's song as music for the routine.
You need to use a song from Britney Spears, Madonna, or a similar artist for the routine.
You need to use jazz music for the routine.
You need to use ``music'' for your routine that is entirely ``played'' by some of your team members.
You need to use the national anthem of some country (real or otherwise) as music for your routine.

Constraints of type 2

Your cheer needs to be about cheese.
Your cheer needs to be about the impending doom of the world.
Your cheer needs to be about a terminal disease.
Your cheer needs to be about a high-school crush.
Your cheer needs to be about your love of make-up.
Your cheer needs to be about 9-categories.
Your cheer needs to be about the globalization of the economy.
Your cheer needs to be about Hannah Montana.
Your cheer needs to be about ``Math is hard; let's go shopping!''
Your cheer needs to be about income tax.

Constraints of type 3

Your cheer needs to use all the moves in the chicken dance.
Your cheer needs to use all the moves in the Macarena.
Your cheer needs to use all the moves in the YMCA song.
Your cheer needs to involve a human Rubik's cube.
Your cheer needs to include all the moves in ``Bunny, bunny, tokki, tokki''.
Your cheer needs to include at least three different kinds of scream.
Your cheer needs to include all the moves in ``I am a little teapot''.
You need to have a blindfolded cheerleader.
Your cheer needs to involve playing cat's cradle.

Constraints of type 4

Your cheer needs to include some cartwheels.
Your cheer need to include some somersaults.
You need to lift at least to cheerleaders simultaneously.
There should be a moment with at least two cheerleaders upside down.
One cheerleader cannot touch the ground during the whole routine.
You need to include a three-level pyramid in your routine.