Hey there. Starting from any one objective on the left, your aim is to follow the dotted lines, to create a line of completed objectives that go all the way to the right hand side, which will let you claim a reward and reset the pathfinder to do it again. The 'Tiers' are just the 'columns' (curved columns) of objectives - Tier 1 is the six objectives on the left, Tier 5 is the two on the right beside the final reward. I know that the left objectives are also numbered 1-6, this doesn't really have any significance. You can progress and work on any objective on your pathfinder, you don't have to have linked it yet, but to actually claim the reward, you DO need to have linked through to it from the left. So as an example, the top objective in Tier 2, can be completed whenever, but can only be claimed once you complete and claim either the top objective in Tier 1, or the second objective in Tier 1. That lets you look through the objectives and plan ahead - on my Pale Heart pathfinder for example, I've got 'kill Taken' in Tier 1, 'kill with pulse rifles' in Tier 2, 'kill with energy weapons' in Tier 3. If I focus on Taken, killing them with an energy Pulse Rifle, then I'm making progress on three adjacent links simultaneously, and if I do this in Overthrow, I'll be progressing Tier 5 too. I then just need to locate one of the area bosses and I'm done. [quote] I've played 7 rounds of Gambit on Void and can't get past 20%. I've killed hundreds with melee, grenade, finishers, and weapons to, apparently, no avail.[/quote] However as per the requirement, 'by weakening and suppressing them with Void' - what are you using [i]specifically[/i] to weaken or suppress them? Like on a Void Titan, are you using Shield Bash or Suppressing Grenade? Are you using Echo of Undermining to add Weaken to your grenades? etc. If you think you've completed the pathfinder and it's not working, could you share a screenshot?