South Park: The Fractured But Whole
36 Achievements
25-30h
Big Knocker
Kill an enemy by knocking another enemy into them
72.5%
How to unlock the Big Knocker achievement in South Park: The Fractured But Whole - Definitive Guide
Superpunch and superheadbutt. When two are in a line keep using these skills and eventually the one behind will die by his buddy falling in to him.
https://youtu.be/jwElrSQAyPA
and it popped straight away
You'll likely get this during the game's tutorial battles, but there are plenty of opportunities later on as well. Many attacks you have will cause a knock-back effect, sending the enemy flying back a few squares. If there is any enemy in their path, that enemy will take some damage as well. You'll want to use ranged attacks to hurt someone on the back line of an enemy formation, then wait for an enemy to move in line with them and use the knock-back attack to make the enemy in front hit the weak enemy behind. If this doesn't kill them on the first knock-back, simply repeat until the enemy in back is dead.
This one can be either very easy or semi-tricky depending on how the enemies move and place themselves. What you want to happen is to have a weakened enemy get lined up behind another one, then do an attack that will knock the front enemy back into the weaken one behind him to do enough damage to kill him. Once you have killed an enemy by knocking another one into him, the trophy will pop.