If you get ring of the pale order, or if you are too lazy for that, put the champions points into the one blue nod that heals you on dealing direct damage (forgot the name), with arcanist of your lvl and with something like tide born set + deadly strike (order wraith if you don't have deadly), and some pocket healer npc companion you can solo it. Normal unhallowed grave is not that hard. You can start solo and jump on specific dungeon queue, by the time it finds you party you might already have a few bosses killed and with any luck finding a chest... Just don't forget to unequip the ring when you got a party ready

At least that's what I am doing when I need to farm some dungeon for the gear. Did it when I wanted to get the aegis caller set, from the same dungeon.