I might have had some setting messed up because I didn't see blood, the other things I probably just didn't notice(cause i'm unobservant as shit) - but what you listed is good
I don't really pay attention to it anymore, but maybe I should add more blood. It's just I'm not fond in particular of enemies having hectoliter of blood. You know, when you shoot them and the whole screen gets covered in red particles. Or actually, maybe it's just because alien blood is yellow and not red.