Board Thread:Achievement Hunteremail@example.comfirstname.lastname@example.org
I responded on that post - which if you haven't seen it already
It seems like it's from a Minecraft video before Episode 72 (13th October 2013)
I'll work through them with my brother to see. I've respoded on the other forum too.
Thanks for your help and if you happen to stumble upon the video please let me know :)