I really had a lot fun with this!
And I'm really proud of my score!!
I have quite a bit of feedback and I hope you take this the right way, I really think this could be a cool, fast-paced FPS shooter with a bit of polish.
Feedback wise, the red colour on the gun, because it's so shiny it looks orange... and is VERY similar to the yellow, I found that frustrating.
I also don't think the colours need to be random, I would have rather scrolled to the correct colour.
Or put the upcoming colours on the gun so I can see what is coming, rather than having to look at the bottom of the screen.
Or if you made the spawns more frequent or put more enemies on the screen at once you would be able to use the other colours more.
I also don't think the bullet drop is necessary, I didn't find it rewarding to guess the bullet drop I would rather my bullets just go straight.
Finally, I think you could make the player dodge something, either bullets/projectiles or things on the floor. I didn't feel much need to move otherwise.
Hope this all makes sense, feel free to reply if you want me to explain anything better.
I hope you keep developing this :)
Aegis 🛡