Big Trouble in Big Town

 is a Fallout 3 quest. It is also an Xbox 360 and PC achievement.

Objectives and walkthrough
Flash, a local resident of Big Town asks you to go secure some hostages from Supermutants in the Germantown police station. Use the upper level door to gain entry to the station. Make your way down to ground level, watch out for land mines! Once you're on the ground level find Red and get her cell door open (either pick the lock or open it with the key from the nearby mutant). Talk to her and she'll thank you for rescuing her and tell you about her friend Shifty. Rescuing Shifty is optional and gives good karma. If you want to rescue Shifty make your way down to the basement and I recommend sneaking up on the room where he's located to listen to the super mutant and Shifty talking about how the mutant will eat him! Hilarious. Anyways, kill the mutant and rescue Shifty. You can give both Red and Shifty weapons but they're not very good with them. Make your way up to ground level and exit the house. If you haven't cleared the area yet, get ready for a fight. You'll be facing several mutants out there, roughly 3-4. Once they're dead start walking twards Big Town. I don't recommend that you fast travel, I didn't even try it, since there are Protectron units in the area, as well as Radscorpions and other hostiles. When you make it to Big Town they will both thank you and Red will tell you that she heard the super mutants discussing yet another attack on Big Town and ask for your help. If you accept you'll be rewarded with good karma upon completion. 4-5 super mutants will storm into the area and the residents are pretty... lame, so it's your job to take the mutants out. If you've got a high enough small arms skill you can teach/train them how to shoot and with a high enough science skill you can also reactivate some broken robots* in the junkyard. On a higher difficulty setting it might be necessary. Once done, you're their new hero! Congratulations. You'll recieve an achievement for the completion of Big Trouble in Big Town, 20G for XBOX360.

(*Seems to be bugging out for some people, platform unknown.)

Bug
If a player rescues Red and does not enter the basement to rescue Shorty, after returning Red to Big Town and fighting off the super mutants, the player will no longer be able to rescue Shorty. He will still be in the basement, but the speech between him and the super mutant captor will carry on as if the player was not present. Upon defeating the mutant, Shorty will remain in the crouched, cuffed position and speak as if he was back in Big Town.

Behind the scenes
The name of this achievement could be a nod to the 1986 film Big Trouble in Little China.