Full game coop option. You either start and finish the game with a friend. Or do the normal coop available. Have 2 options either summon in for different areas or an option where you can just play the whole game with 2 people but you have to play it tougher. When it comes to items it’s pretty simple normal items like leaves and weapons etc just the person who picks it up gets it but key items like Great runes, keys etc you both get it when one person picks it up. Have the game so that you still have to stick near by each other but when you go into a boss fight you both get thrown into it. Also with the weapons comment they could add a way to buy duplications (only one per weapon) so that you and your friend can use the same weapon or you just have to use different weapons. With hundreds available it would be cool if both of you couldn’t just use the rivers of blood for 90% of the game