I've upgraded IO bunker to level 7(two others are level 8) on my warlock, din't take my pinnacle reward, switched character, upgraded IO to level 8. After this I've returned on my warlock to collect my pinnacle and my pinnacle 1010 reward switched to level 1000 ordinary reward! So I din't collect my pinnacle and therefore can't finish this triumph.
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Everyone here, pay close attention. I figured out the problem. You know the sets of perks at the bottom of the page like an upgraded frame or Valkyrie. Make sure to OBTAIN ALL OF THEM when your done upgrading. When all 7 ave been claimed, I got the triumph.