Hey Boundy, not sure if you were still wondering about the Jack the Ripper DLC, but I finally got around to playing it myself.
Unfortunately, there isn't much new to be had here, from a ryona perspective. When you finally fight Jack himself, he seems to share the same finishing maneuvers of the cane wielding enemies even though he is wielding a knife. The only thing that sets him apart from other generic enemies is that he is able to counter your stun attacks. You need to sneak up on him to take him down. But he doesn't really have any special animations. He does have some nice taunts, though, for what it's worth.
There is one section where you have to fight these insane lunatics that use their bare hands to attack. They share the same kill animation with one of the fight club enemies. The nice thing here is that the screen doesn't turn black like it does during the fight club animation, so you actually get to see the ending of it, but it's not really much.
When you play as Jack, there are parts where you can kill random female civilians and he has these pretty elaborate "brutal kills" that are pretty nice. Wish he would use it against Evie when you fight him, but that is not the case.
There are these new missions where you need to save/protect prostitutes from their male clientele. They have this new animation where the male will grab the woman by the throat and they start making choking sounds. If you don't save them in time they will flop over dead (no special animation). It's kind of cool, but once again, I wish they could use this type of move on Evie.
Speaking of Evie, I kind of despise her character model in this DLC, lol. She is supposed to be 41, but she looks more like she is 65+. It's pretty strange. Also don't really like her outfit. Probably my least favorite outfit in the game.
Sorry to sound so negative. Just really disappointed in the enemies in this game. They really need to come up with some new stuff for future sequels. I am just hoping that we don't have to wait another decade to get another female main character. That would suck.