Valdis Story is one of these rare metroidvania-alike games that incorporates almost every attribute of a proper metroidvania-game. Decent story? Well-developed and complex battle system? RPG elements? Exploration aspects and secrets? Beautiful 2D visuals and animations? All check.
It took almost 7 years for the game to crawl out of the concept cradle but it sure worth it. And the result? Unique combination of old-school gameplay core ideas with a modern approach.