All I can say that this is an incredible game. One of the best that are here on GOG. But I'll note here at the start - I don't recommend playing it on keyboard, it was designed to be played on a pad. If you're a metroidvania type of game fan - you're at home. If you're not - do not worry - I'm not to and despite that I enjoyed massively this game. The combat system is simple enough to learn it and it doesn't take that much to master it and have fun. There are some RPG elements in the game, you gain exp from slaying monsters (additional bonus exp from big hit chains) and you distribute the stat points. You also have an inventory which enhances further your stats, you can gather materials and "craft" the stuff. Honestly it's just a way of progression in the game, something to keep you interested beyond the story and hacking through enemies, it is also a good system of rewarding the player - the best stuff comes from treasure chests that are optional, but many of them require more effort to get to them. The visuals are amazing, everything is hand made, very coherent and just full of character. I loved the voice acting in the game. And the soundtrack is also very good. The story.. The whole game is just worth playing for the story. Although it's not very complicated it's very interesting, inspiring and at the end - heartwarming. The world that was created for the game contains many mysteries that are unsolved, many basics of this universe are very shortly described without much background, but that really didn't bother me, it's not a massive AAA openworld rpg (thank God). Consider it as a tale. It's not a very long game, it took me 9+ hours to finish it doing some of the optional quests and stuff but I can say every hour was worth it and I'm satisfied with it. Go buy it, support the devs and enjoy the game.
