Icebreaker Achievement/Trophy GuideTo earn this achievement/trophy you will first need to unlock the "Cryo Beam" skill from the tech tree. You will start to earn skill points during the first mission so the achievement/trophy can be earned on this level if you so choose.
To actually earn this however, you must play on normal difficulty or above as enemies will die before they freeze if you play any lower. Using the Cryo Beam, freeze an enemy then perform a Omni-Slam by pressing
or X to jump into the air and melee with
or Triangle.
As long as you are near the body when you do it you will shatter the enemy. The best place to do this is after meeting Alec Ryder in the first mission.
If your misplaced your skills, you can always respec in the Med Bay on the Tempest.Here is a video guide showcasing myself unlocking the achivement.