Graverobber
Rare6.8%ObjectiveOptional
Discover your Remnant Ghost, and retrieve any lost items or equipment it held
It is definitely worth trying to tick this off early game - when you've not got too much stuff to lose.
Basically, if you die your immediate priority should be to go straight back to the same junction and raid your car for this achievement. Don't leave it until later, because it may not happen again and the costs of death are real (in time spent, if nothing else).
If there's nothing in your wreck when you return, try putting something in the trunk and taking it out again - this should cause it to pop.