Recently completed legend campaign on my hunter and did not receive the exotic from the "Legend Forged" triumph. The tier 2 Kepler Gear focused engram is also telling me that the triumph needs completion, which it is. I will note that the intro mission was done on normal on my hunter, but I went back and did it on legend on my titan as there seems to be no way of running the missions back through on legend. Edit: No, the exotic is not in the postmaster or the Altar on Kepler. I have checked both before and after restarting the game.