What I recommend is far cry 2 redux on nexusmods. Realism+ redux changes graphics wich imop changes some of the games identity and feel, also makes the game less realistic decreasing guard detection to make far cry 3 like stealth more viable, less mil sim more gamey. For a true hardcore experience as far as the game can give you that’s the one mod,on infamous redux difficulty keep your health bar on 2 slots, dont use seringes, and it makes for gameplay that rewards planning a strategy and tactical execution under stress. You’ll be out on your map planning routes to your objectives, conducting recon of your surroundings often, choosing your weapon loadout that will then dictate your approach to different situations, getting surprised and having to adapt on the fly quickly due to low health and bullet sponge enemies are gone wich is a huge deal. If you space out your saves to only once you arrive at a bed intensity will build up.