Plants vs. Zombies Garden Warfare 2

This one is pretty simple. As Kernel Corn, the Shuck Shot is the RB ability. It can hit multiple enemies at one time so you can wait til they are bunched up. Raising the flag in the Backyard Battleground will probably be easiest, but this can be done anywhere while you are working on something else too.

Fun achievement to get! Blow up the world!

To obtain, simply play as Corn and press . Often! In the direction of a zombie!
The simplest way to get this really quickly is to play a solo round of Garden Ops. Try planting plants sparingly around you so you can get zombies grouped up around fighting them and you can shoot in the shucks and get a bunch at once! Or just play through using it at whim. You'll surely get it in a game or two.

My only tip is to make sure you aim where the target is going to be in about 1 or 2 seconds. The shucks take a couple seconds to charge up and they fly relatively slowly. Direct hits do way more damage than the splash damage.

Good luck!

Video guide

This achievement can be earned in Ops or in the lobby by using the Flag of Power in the middle of the map using . Spawn in as Kernel Corn (Plants Team) and simply kill 25 zombies using your Shuck Shot ability ().

Here's a video to help: