Easiest way to obtain “Got you, didn’t I, you little sucker!”

Overview

Easiest way to get “Got you, didn’t I, you little sucker!” achievement, as well as its counterpart from the original SE: NZA “Explosive Personality!”.

Where and how?

In order to do this, you’ll want to be on the 4th chapter of the 1st episode called Library of Evil. You’ll have to play all the way through the level until you obtain the book of souls after which you leave the library and this is where you can obtain this achievement with little to no effort.
After the checkpoint a wave of suicide grunts will start popping from the ground in fixed positions so all you have to do is remember the first grunts’ spawn point, aim at the position of the grenade in slow motion and pull the trigger. It will most likely take you a few tries, but you can just restart the checkpoint and give it another shot.

Conclusion

This exists solely because I struggled to get a good clean hit on one of the grenades in any other chapter other guides suggested. Most of them state the best way to do this is on chapter 2 “Cathedral of Resurrection”, in the first alleyway right on the start of the chapter, but I had issues doing it there simply because AI moves unpredictably, which is especially true for suicide grunts.

I haven’t seen anyone mention this particular way so I have no one else to credit but myself.

If something is unclear or you see some problems I missed do let me know, happy hunting!