I'm pretty sure all 4 warders are of equal difficulty, as they are just the four warders of the sleeper. They don't have to like, be killed EXACTLY at once, but they all have to be dead at the same time - that is, before respawn.
Leaving one alive is merely meta-gaming (an intended meta-gaming, I'm sure).
edit: so as I see above, one is harder than the rest! I never did sleeper's tomb. I just logged in one day and my friends had logged me in and gotten me a primal.
__________________
"...we're gonna be doin' one thing and one thing only... killin' Nazis."
|