Alright, so. I was pretty hard on the game in the video, but only because I see some potential here.
There's a lot going on in terms of ideas and mechanics and some conflict while others just feel unfinished, so understanding that this is still an early build of the game brings me some hope that this game will grow a lot.
First off is the health regen/living realm combo. It makes damage trivial given you have the patience to just wait it out, but it comes at the expense of the games pacing. There's nothing to do in the living realm so you just kinda sit on your thumbs until you're healed. Maybe it should take up a resource or cut off your regen to be in the living realm, but as it is it just makes you wait.
Second is the combat. It feels like you're aiming towards a hack and slash, but there's no flow. Adding some sort of combo, or string of animations that had some sort of stun or knock back that would prevent enemies from doing damage. Which follows into my next point, the movement speed is pretty slow and it's near impossible to avoid damage.
I think the game has a great visual flair and the realm switching is awesome, but the game itself lacks a lot. It's got some potential, but a long way to go to get there. I hope to revisit this in later versions and see what's changed!