Now, there is no way to save your charachter without finding an extraction rope (wich can me annoying since there is no gurranted on all runs.) But me and my friends found an accidental way to save your charachter wich skips a floor, even the boss ones! All you need to do is to press Alt+F4 or leave the game by closing the window. When you come back to the game your charachter in the charachter menu with all his items, abilities, and progress saved! You need to be careful tho, becouse if the host does it first and the server crashes your charachter may not be saved. Also it works even when your downed or in the middle of the fight(one person needs to be alive for it). Hope this will replace the wanted save button! If you don't trust me you can try it yourself!