Behind the building with the ammo vendor in Fyrestone, there is an outcropping of rock. Clambering up onto the outcropping and moving to the claptrap unit hidden there completes the challenge. This can be done by moving around the right hand side to the rear of the building to reach access points for the climb. A red chest appears next to the decommissioned Claptrap. File:Borderlands 2 Hey! Over Here! Clap Trap Challenge