I just finished the main game and the DLC a couple of days ago on PC. To answer your question, korangot2, there is no new ryona that I saw in the DLC. It's really an overall lazy production, in my opinion.
There are mutated wolves, but they have the same kill animations as the normal wolves. There are possessed soldiers, but they share the same kill animations as the sword wielding Deathless Ones from the main campaign. And most disappointing of all, Baba Yaga herself never attacks you in melee range. She just floats around shooting fireballs that take forever to kill you (even on the hardest difficulty) and when they do you just get a generic ragdoll or burning animation (can't remember which one).
So yeah, the DLC was kind of a letdown. The base game itself was also a bummer when it comes to ryona. I am kind of surprised at the level of censorship on some of the kill animations, especially the various Deathless Ones. Combine that with the lack of unique sounds to correspond to the different kill methods and it's actually kind of annoying. Like for the last boss, in one animation he slices her throat and in the other he stabs her through the back of her neck, but they just end up playing the generic death animation sounds. Weak.
I will say that Lara's walking, running and turning animations might be the best I have ever seen. The cutscene animations were also really well done. But yeah, the general gameplay was kind of repetitive and the enemy variety was seriously lacking.
Speaking of enemies, why are there no female enemies at all? They kind of explained it away in the 2013 game with the whole island storyline and how all the females were being sacrificed. But they have no excuse here. I mean there are a ton of females that are allies with you, but Trinity seemingly has none. Luckily, more and more games seem to be adding female enemies so hopefully TR will follow suit with the inevitable follow up.
Anyway, enough of my bitching. Overall the game was alright. Hoping for some better writing and less of a focus on open world collectathon gameplay for future titles.