I would look at the https://github.com/godotengine/tps-demo https://github.com/godotengine/tps-demo (which I think comes preloaded at least on the steam version

I would look at the https://github.com/godotengine/tps-demo https://github.com/godotengine/tps-demo (which I think comes preloaded at least on the steam version) to see what Godot's current capabilities are for a 3d shooter.