Any recommendations for modded campaigns?

Hi there. I've been playing Serious Sam since I was 4, so almost 17 years. I have the whole franchise on steam and I still enjoy every bit of it but after all these years it got to the point where it's not challenging anymore. So I wonder if there are any good steam workshop campaigns or cool mods that I can download. If you got any favorite mods or some that would work great together don't hesitate to reply. Thanks.