Achievement difficulty

So out of curiosity. What do you guys think the hardest achievement in Halo 5 is? For me it’s Worms don’t surf…

I have no idea how I got that one. We were playing co-op on easy, my son kept the two AIs around the bend so that they wouldn’t kill the hunters and I could respawn without starting over. Twice I got killed by being slammed/thrown to the water, the hunter wasn’t even close to going off the edge. Each time I respawned the hunter had simply dissappeared.

The hardest is going to be killing two wardens simultaneously.

> 2533274797433822;2:
> The hardest is going to be killing two wardens simultaneously.

Tried it multiple times now without succes; it’s one tough cookie.