As a Warlock, pledged to Dead Orbit, I achieved a rank of 51 by Sunday. I got all of the ornaments except for the chest piece, which required 34 VIP chests to be collected (3% completion per chest). This seemed above and beyond what any other classes/factions needed for their chest pieces. I was only able to complete 53% (a little under 20 chests collected) in that time. The ornament's requirements only counted the chests collected, not VIP targets killed (like the double servitors on Titan who only unlock a chest, but don't drop one). I feel like this ornament either should have needed fewer VIP chests collected, or should have included Heroic Public Event chests, or other challenging chests. I was able to get all of the other ornaments without much trouble, but this one was just way too much of a grind to achieve in the span of a week.