Key
A - The person receiving the most exp / gold
B - The person receiving the second most exp / gold
C (with 3 people) or D (with 4 people) - The person receiving the most exp / gold



1. All 3 or 4 of you join a game Act 2, Quest 8 right before you kill Zoltun Kulle.
2. Kill Zoltun Kulle NOTE: Do not pick up the black soulstone yet
3. A will then leave the game, resume the game, pick up the soulstone and turn in the quest.
4. A will then join B's game, pick up the soulstone and then leave.
5. A will then resume and turn in the quest.
6. Next, A will join B's game again, B will leave the game and A will turn in the quest.
7. B will then resume the game, A will join his game and they will both turn in the quest together.
8. Rinse and repeat steps 4-7 except A and B will be joining C's game.
Note: I haven't actually checked the values for this but it seemed faster to me. I know it's certainly easier if you don't wanna keep killing the boss.
Note 2: There is a checkpoint next to boss entrance that speeds up picking up the black soulstone. Look below for that spot.
Also i hate to say this but it seems like if I wont ask ,nobody will give it to me so and me please.