If you play on the PC and want a tougher game as I know some here do, I can suggest visiting Nexus Mods where a couple of downloads remove many of the HUD elements, thus increasing immersion and a “Hard Mode” mod deletes adrenaline as well as making enemies tougher.
For changed visuals I now use one of the “clear vision” mods that removes the bokeh and DOF effects as well as a mod that allows increased scoped view speed via the mouse so allowing better close combat using red-dot and Magnus .44 scopes.
I won’t give a link as this is the devs site but just google for “nexus mods”.
Admins - if this is a touchy/unwanted subject please just delete.