This game isn't great, but I liked it enough. It really just left me wanting more.
In a sentence: It's 1/3rd of an action game in every sense, but the third you get is pretty competent. You really feel the budget (and time?) restraints, but you also can't deny the Platinum Games craftsmanship.
There aren't many enemies (only one boss really and a few sub-bosses), your repertoire feels like it's missing a few things (I want to say mostly in the area of aerial combat), the plot feels like half a single episode of Korra, and it basically goes straight from extended "tutorial" beginnings of a game into the final gamut that summarizes the game before the final boss. There's like three environments? Maybe four with the bending match ring. So yeah, a budget title. On the other hand, it feels more natural to play through this twice, back to back, than most games. I look forward to playing Extreme (did the first two chapters in fact), but I may not get the chance for awhile (Bayonetta 2 and The Evil Within, to name two reasons).
While it feels like a condensed slice of a larger game, the combat system is well executed and encounters can be quite challenging at times (I died way more than I thought I was going to). I understand why so many people would get frustrated by the game (although I have no pity for scruby reviewers). It definitely works against the game's best interest to lock away bending, but at the same time, we thankfully get counter/block and dodge from the start (the former is probably the most satisfying mechanic in the game and it's also the main way to fight bosses apparently). If the enemies weren't punishing, this game wouldn't have been half as interesting. I should note that I beat Normal without any items, but I think that may have been a bad call lol. As something somewhere between a style and a weapon, the elements are different and mechanically layered enough to stick out from each other. The only element I didn't using much was Water; it felt way less effective than the other 3, outside purely ranged scenarios. While the level design isn't very elaborate, it's not completely barren of interesting points either. I kind of wished there was a stronger elemental theme to enemies and defenses, a la The Wonderful 101.
As an adaptation, it's not what a lot of people hoped for I imagine. While PG has made one of the best licensed titles around (especially for the budget range), it still feels like a cheap cash in a few ways. Given limited the scope, there isn't a lot they could have done, but what's there is too straightforward and simple. Korra, that nerd airbender girl, and often absent the main villain are essentially the only characters in the whole game, but the main villain lacks characterization or history (this is really the only thing they needed to get right), the girl is basically Navi-type character who shows up occasionally, and Korra is okay as an expressive player avatar, but doesn't really establish a personality inside the story (you are mostly going off what you know from the show). It's disappointing because during the bending matches Mako and Bolin appear and their characterization and dialogue with each other and Korra (also the announcer) liven up the game a lot. I wish they were supporting characters throughout the game. It also feels like the game is more interested in referencing events (season 2 spoilers everywhere!) rather than establishing the world. Despite what some people say, Platinum is actually fantastic in establishing atmosphere in games, but it seems like they were very limited here. In terms of adapting familiar moves or the general feel of bending, they did well, but there's a gap in quality between that and the stuff mentioned above. I will say the art style, technical shortcomings aside (it looks sort of like a remaster of last-last gen game), is pretty on point. The music is too, but I wished it was more interesting. It's a totally unfair comparison, this is probably Platinum's least interesting soundtrack.
Honestly, I kind of liked the Naga sections. The game would have felt too empty without them.
In the end, I really, like, really want to see them do another Avatar game and build off this one. Maybe with a higher budget. They could make it a more competent use of the DMC formula, they could make it a more free-form game, they could add in multiplayer elements for the bending matches, etc. Lot's of ideas, and I would even just be happy with an improved sequel of this game as another budget title. I doubt this game is doing well enough to justify that though.
Somewhat related: Having just watched it in preparation for this game, I think Korra Season 2 is better than Season 1 (which I watched a long ass time ago).