The game is a little bit confusing even with the text tutorial, ive reached lvl 50 after playing for a few hours, there's almost no content, more than half the skills and perks are locked "available on release", the rebirth is also locked behind the game release, same for more than half the itens and you can only tier up once, since the second upgrade encounter tier is also locked for release.
Other than that i would say it's a ok prototype, as long the AI art is removed it could even be sold after a proper tutorial, maybe have some features locked and open as the player progress so players arent overwhelmed with too many features at once.