I really like the combination of the 3d and 2d elements. Though I think the lighting is a bit dark which made it hard to play.
I wasn't able to equip any items, and items that I got from chests seemed to disappear before I could collect more than one of them (though I did manage to get 2 on one occasion).
I wasn't able to get past the blue slime (it died on the trap). So I wasn't able to complete this unfortunately or get to the stage where the theme became clear.
Looks like it has a lot of potential though.