Hwah~ This is my first time playing this sort of game.

After selecting a character, select a level of difficulty...

What difficulty levels are there?

There are levels ranging from God Mode to Beginner.

Well, which of those is the easiest?

While in this mode, even if a cataclysm were to occur, you would not lose to your opponent. It is the absolute weakest mode. Because the victor would be obvious from the start, one could even say that the battle would be pointless.