Very fun gameplay ideas. The item durability theme and rescue mechanic add a sexy spin to the roguelike elements.
The dodge roll feels very fun to use and I love the whole system of avoiding slow attacks through clever positioning. I think the player's own attack should also have some sort of indication of how long it's going to take, it can feel a bit awkward timing it.
The whole idea of having to choose which item to use without having an explicit inventory makes the game more fun in my opinion, but it is a bit punishing if you lose your weapon. Being able to carry a backup weapon or a smaller side-weapon might help the player feel a bit more in control.
I really like the semi-3D look of the dungeon, I thought it was very neat even in the progress previews. Some animated effect for when the attacks hit might be nice, but that's the only major visual cue that I think is missing.
Wishing you the best of luck with continued development. There are a lot of very interesting things this game does and I would love to see them all developed further.