This game was great and I had a pretty good experience!
The small effects in the game were well made, like the little particles that emit after every successfulshot, alongside the cool music and sound effects. The colors and such were also good and pretty visually appealing, and stand out well.
The game did feel really easy though. The very start of the game wasn't that challenging, which is as expected, but it only got easier and easier from there on. After I got like only a handful of allies I could just spam right click with the chargers and just shred through every enemy. There was even a point where I could literally stay in the middle of my horde and do absolutely nothing, and I would still gain more and more allies as the enemies would just run into the horde and die super fast.
After like 120 ish kills the game started to really chug frames and was nearly unplayable, though I was still gaining kills since my horde was so big, I think I got to like 200 ish kills before exiting.
I'd for sure look at difficulty progression in the game and scale enemies a lot more as you gain allies. While it is fun to become really powerful in some games, it should still be like a little contained.
One other small suggestion I have would be to tone down the camera movement a little. Not sure if it's just my mouse sensitivity but it was pretty disorienting because of how fast it was.
Anyways overall it was super fun to play and the game felt great, nice job!