In what way does your game fit the theme?
When the enemies group together, they receive buffs like increased speed and damage. This makes them stronger together.

Did you write all the code yourself and made all the assets from scratch?
The only piece of code I didn't write is the audio manager I used. I got the script as a download from the old brackeys website to save time. Everything else I wrote on my own. The only assets I used was a pistol asset from google poly and a few sound effects from freesounds. The rest of the assets were made and modeled by myself.