Any Biotic that lifts your enemy off the ground and the Cryo Bomb tech are required. with the Biotic, lift your enemy off the ground and hit him with the Cryo Bomb while he is still under the Biotic's effect. This will cause him to be stuck in a permanent falling state, where he is incapable of inflicting any damage. This is incredibly useful when attempting to prevent the deployment of Harbinger, because once he enters the glitched body he cannot move. By doing this, you can kill him at the end of a fight to prevent him from jumping to another body.