Exotic Weapon Bounty

I received an exotic weapon bounty from the robot dude in the tower. To acquire it I have to do the following: 1. Kill 500 hive enemies on the moon (done) 2. Get 500 points with void damage in the crucible. You get 5 points for a kill and lose 2 points if you're killed (not done, I look like a chicken on a hotplate when trying to play crucible) 3. Conduct a level 26 strike and kill Xyor the Unwed - not surprising he's unmarried with a name like that. (Also not done, I'm still level 24) Does anybody have any tips or advice? In time I'm sure I'll be able to do the level 26 strike but is there any way of making the crucible a little bit easier. It'd be nice if I could get a group of players in the crucible who were all in on it and would just let me shoot them... but I suppose that's not entirely possible... is it?