After u defeated the creature in the back when waving the medalian,pick up the broken crystal,and open it by left click in your mission tab and your medalian will change to a darken one.,then put the tablets in and follow procedure.
We should be able to more then 1 companion in the arena in solo mode.or in other modes as well,if nobody show up.
Because we have a lot of companions now.:
No companion amour,just in there under ware,when u try play thru twice Knights of fallen empire,chapter one,the hunt.
They same Kind of error in dragon age Origin,the main character when play thru twice no amour.