That we killed Sesa 'Refumee 
damn you… now I feel bad too 
> damn you… now I feel bad too 
If only the arbiter had known sooner…he would have been a great ally 
I think it was the Heretic Leader’s fault for his own death. Instead of letting 343 finish answering all of the Arbiter’s questions and (hopefully) showing him the light, he instead tried to light him up with his dual Plasma Rifles. Not a good idea, and as we can tell, it didn’t end well for the leader.
Irony because now Thel’ Vadam has the mantle and is considered the heretic.