Played a few hours today, don't want to beat it all in one sitting.
Ok, I'm a fan of AC/AA, liked AA, liked AC more than AA.
-> The music is fantastic
-> The graphic/art assets are fantastic. Even AC looks fresh with the new assets they put in it. The dx11 features are great, I usually sit at 50-60 fps with everything on except physx. Core i5 and HD 7950. Honestly surprised this game isn't being put out on PS4...
->The animations are fresh, they aren't copy pasted from aa/ac. There are ones that look similar like pulling grates off the wall (he has a scowl on his face when he does it) or when you right trigger + y finish someone (he does two fists instead of one).
->The intro is fantastic. I haven't made it to the second boss fight yet, but I enjoy doing Crimes in Progress and I really want to knock out the collectibles.
->Deathstroke is pretty awesome, I hope they work him into a dlc. I didn't beat the 100 man challenge (no upgrades yet), got to 60/100. He has regenerating health and it seems he can take more hits than batman. He also pulls grates off the wall. I didn't play red robin in AC, so I don't know how similar the animations are to him. His animations and moveset does feel like it fits him well. My only disappointment is that he doesn't use his sword (instead uses his staff).
Please understand, this game isn't a cash in. Its a sincere effort from WB Montreal and its pretty awesome. If this came out before AC did it would have recieved the same reception. However I haven't played more than 2-3 hours so far, these are my initial impressions. Maybe the game falls apart and is unfinished toward the end, but I'm doubting it.
No multiplayer impressions yet, saving that for when I beat the game.