I played the crap out of the demo and had been looking forward to this release for a while. I enjoy playing but it is the definition of an unfinished, early access game. If you're okay with constant crashing and reloads then you'll have a good time. If that frustrates you, then wait a while until they patch things up and optimize the game better.

Positives:
Very fun and intuitive physics based medieval combat sim - most fun I've ever had swinging a sword in a videogame. When you master the controls and start feeling comfortable parrying, blocking, swinging, stabbing, and thrusting your weapon of choice in various ways, its extremely satisfying.
The progression mode shows some promise if they keep expanding on the idea through development and add some more content surrounding the "story".
I like the addition of zombies in the abyss.

Negatives:
No matter how much of a beast your computer is, or how beefy your graphics card is - it doesn't matter. this game crashes CONSTANTLY. I've found the game crashes when:
There is a lot of blood on the screen
You hit someone too hard with your weapon
You play a buhurt or carnage battle (more fighters in the arena than your standard duel or duo fight) and are on the slums or forest map (you might get through these without a crash if you manage to defeat everybody without drawing too much blood).

The physics while holding larger and heavier two handed weapons needs to be ironed out. They can get real wonky in your hands real fast, twisting around your body and your legs, and can make your character fall to the ground. Although its hilarious when this happens, its a pretty big immersion breaker and loses you fights.

I'm not sure if this is intended or not, but after beating the game, beating the baron multiple times - I can't die anymore. Even after getting stabbed in the heart or my head chopped off, it just brings me back to the menu and I pay to heal and get right back in the arena. I enjoyed the stakes it brought when you lost a battle and then had to fight your way back out of the abyss to save your character.

Piggybacking on the last point, I'd like to see a shift into a truer roguelike style: where If you die in a fight, then also die in the abyss, it clean wipes and you have to start over from the beginning with a new character (like how it was in the demo). Currently, if your character dies, you just make a new one and he's plopped in with the same rank, same inventory, same everything as your previous character.

Other nitpicks: Would like to see the UI improved in the menus, especially the weapon crafter.
After you get some solid pieces of armor and good weapons, the game becomes
incredibly easy. Would like to see the AI of the enemy fighters improve, especially as you
progress up the ladder.

Overall I'd say stick with the demo if crashes frustrate you - its the same exact gameplay minus the barebones story progression mode and a few different maps. The demo does crash sometimes, but way less often than the early access version. I still recommend the game because I've had a lot of fun playing it and can see the vision of where this can go when they figure out how to optimize properly and when more content is added in time.

kill robots, kill humans too? good time.