By far the best game in this jam I've played so far and probably will play. At first, I thought this was going to be a demo with the end having you fight the first lord, but after beating Mammon, I'm under the assumption that the game might be complete, which I really like, not only that there's a lot of content, but boss rushes (which I really like) doesn't happen often in games.
Beelzebub was a difficult match (and his status effects did feel cheap at times) but despite losing to him four times I continued to come back every time until I beat him. The characterization is also done very well, not only with Dante which is done very well in the hour I played, but also the bosses themselves have very unique characters in terms of their design and dialogue. This uniqueness makes you want to beat the one you're on to see the next one.
The three main things that all game developers rarely do well in at the same time are characters, plot, and gameplay, and yet this game did just that. 9.8/10