For all of you who have probably tl;dr'd, I have read and I think I understand.
He wants a Call of Duty styled blood splatter when shot.
He wants water to splatter on the screen, amount depending on how long your in the water.
In cold maps such as The Slopes, he wants ice to surround the screen. I don't think this one is going to work out so well. Due to custom maps.
He wants screen blur.
Lastly, he wants Wrist Control, which I think displays weapon info, does not allow people to hurt you, and also displays health. This one might be hard again due to custom weapons.