Interesting game concept! I love the overall visual and audio of the game! :D
The idea of the character rewind the step to previous several seconds has a lot of gameplay potential!
The game itself felt really good in term of animation and visual, but there's some problem I encountered regarding the controls.
I think the camera should be free of the character rotation, it felt really hard to look around every time the character changing direction or rotate. And also, the camera acceleration made it hard to focus on the character action.
I'd suggest implementing free flow combat system, because attacking is really hard when the character is dashing all over the place while doing attack moves. with free flow combat system, the character will snap onto the target the player wants to attack but still feels dynamic.
My personal suggestion: about the rewind mechanic, I think you guys should create an emphasis on that mechanic alone! Make the game more focused! Like maybe creating a puzzle game, or even platforming game, with that mechanic alone will make a unique gameplay upon generic/seems boring genre of a game. because on the current game, it seems like the rewind mechanic is overshadowed by the fast-paced and action combat system you guys made. The rewind would work if there's something in the combat that requires the player to do it. (don't worry too much about this tho, just my personal thought!) :)
Overall, I like the game! looks really nice! :D