A Kunai review bomb appears to have been the result of one dedicated user exploiting a flaw in Metacritic's registration and voting process.
There's plenty of things that can attract me to a Metroidvania. I'll be honest, it doesn't take much. It's a genre I like by default.
I think it was the adorable tablet face that made Kunai catch my eye. This may be the case for a lot of people, but there's just something about that