Really barebones. It starts off seeming pretty bad but it does get a bit better with the enemy varieties and such. The bosses were kinda a joke though. Beat the 3rd and 4th without continues. The first one caused me more issues I think before I figured out why the fuck my double jump didn't work half the time (It needs to be timed at the top of your first jump without warning). I don't really know how to rate this, I thought it was utter trash at first but it has some little spark to it eventually. It's still not anything great and it's certainly not an attractive game. The UI, story, and the stages/backgrounds are extremely uninspired/uninteresting.
The model is kinda attractive but I'm not a fan of the animation style. It's that stretchy animation type that lacks any kind of impact. It might look better than still cgs, but it doesn't really compare to proper animation. Every object in the animation kinda has a limit on the way it can move and they didn't do a good job of hiding it. Notice how nothing (Like the limbs) in the animations rotates or anything like that. Things just move back and forth.
Has some little issues with floating over the ground during combos and getting stuck in the "falling" pose sometimes. A lot of animations trap you in them for quite a while, you need to plan a jump ahead of time at least a second.
It does get better around stage 2-3 I guess combat wise, so it's worth playing/finishing? It's relatively short. Might not be worth the price tag though. I feel like i would have been just fine not playing that, it wasn't really exciting or interesting, just kinda like "meh", lol.