Well I was thinking that since there are Apollo style challenges I thought it would be cool if someone could recreate the Apollo 13 mission to see if it would be harder to recreate than a Apollo 11 mission. So you will need to disable your service module after you set up a mun encounter and then use your lunar module to guide the crew back home all other Apollo style rules apply. You will also need to take screenshots at launch, in orbit, disabling/decoupling the service module, and re-entering the atmosphere. So good luck and I hope to see how you did I will put up my own pictures soon. (If this isn't very formal sorry because its my first challenge)