Clean Sweep (Legendary) - You stab your enemy in the back of their spine, paralyzing them. Afterwards, you run backwards, then charge at them to preform a Spartan slide that sweeps them into the air. You grab the knife as you are sliding, while they are airborne.
Brainwashed (Ultra-Rare) - You stab your knife in your enemy's hand and impale it to the ground. Then, you jump into the air and preform a elbow drop on their visor, breaking their skull.
Fury (Ultra-Rare) - You deliver an extreme knee
to their ribs, making them fall down to the ground. Then, as they are trying to get back up you deliver a devastating dropkick to their neck.
Fourth Demise (Legendary Mythic) - You punch your enemy in the face, dazzling them. Then, you pull out a pulse grenade and shove it into their chest. (Similar to Halo 4's final boss)
Step It Up (Rare) - You climb up the enemy Spartan's back, and jump and hit them with a swift flip kick.