This is the tutorial to unlock cole trains helmet or C0al trains skin in borderlands 2 Hope you enjoyed :)
Mine craft skin tut:- http://www.youtube.com/watch?v=aQd-JrMv-2U

Extra tags Ignore:
Borderlands 2- GOW3 Cole Train Easter Egg Tutorial (Skin Unlocked)
borderlands 2 c0al train unlock tut c0al train skin in borderlands 2
how to get c0al train skin unlocked in border lands 2 tut borderlands 2 easter eggs
killing terramorphous in border lands 2 terramorphous c0al train unlock.