Great looking game. Had fun.
I have some suggestions, if you don't mind:
- I feel like the enemies have too much HP or I didn't get how to kill them more successfully;
- I think you could increase the range of the player's attack. Got a little confused when the sword's swing animation was longer than an actual range of the attack;
- You could also give the enemies some frames of 'preparing' their attack, so it wouldn't be so unpredictable;
- As said before - consider adding the block mechanic.
I liked how you visualized the place to which the player is going to be rewound.
Well done!