Reaching human form is one of the more rewarding aspects of Dark Souls, but there's always been a trade-off. Achieving humanity could leave players susceptible to invasion from other players, leading to PvP combat. Dark Souls II looks to cut out that middle man entirely and allow undead players to be invaded, as well.
Regardless of whether you're alive or undead, human players will be able to invade and potentially slay you in PvP combat. So what's to stop Dark Souls II from becoming a giant grief fest? According to producer Takeshi Miyazoe, there will be deterrents for players aiming to cause trouble, especially if they're foolish enough to grief and still lose.
"Before, the matchmaking was based upon player level," Miyazoe told OPM (via Eurogamer). "That will remain, but we also want to focus on how much time you've played the game. Also, there will be penalties for players who invade, but still lose. There are risks. And there will be 'policemen' against invaders and a ransom system where if you constantly invade or kill NPCs there will be motivation for summoned players to go after you."
Of course, undead players won't exactly be sitting ducks, either. Miyazoe also points out to OPM that the overhauled Covenant system will allow players to call upon protection, so that they won't be at the mercy of rampaging PvP'ers.