This game has no shame in making it look clear that it is a tribute to Dark Souls, as much as it's to Castlevania: Symphony of the Night. A mixture between this two games, in 2D, making almost as well as it was possible to be made. The game has the best pace of any souls game in my opinion, making you feel the difference after upgrading your character and your equipments each time, what I don't think it's very good in other souls games that I played.
The art style and the atmosphere created by the enviroments, are a really a plus for this kind of game. With some gore adding up to that.
The lack of a map, the small soundtrack and the fact that the first half of bosses are harder then the second half, are the negative points people make, but I didn't felt that negative about it. Being a indie game, very cheap, having the perfect lenght, still gets a 5/5 from me.