NEVER SAW IT COMING!
Boost Jump, Dash Forwards, Air Stump Enemy
Call of Duty: Advanced Warfare NEVER SAW IT COMING! – Achievement / Trophy Guide
To get this achievement/trophy you have to have the boost jump, which will be unlocked for many missions. Mission 1 (Induction) gives you the ability early on.
Here’s how to do a stomp kill.
PS – Press X twice to double jump, Left stick forward and push in, press O to stump
XBOX – Press A twice to double jump, Left stick forward and push in, press B to stump