Battle Princess Madelyn total playtime, difficulty discussed

A portion of an SKNR interview with dev Chris Obritsch...

S: How long is the game and will players be able to change difficulty?

CO: The game is going to be 8 hours long on average, possibly much longer depending on how a player approaches the optional side quests and collectibles. The difficulty is a great question because it will actually be flexible by default, play well and the game will up the challenge or if you’re struggling it will tone it down a bit. You can still lock the game in on “Casual” and “Arcade” difficulties though, which will replace the difficulty A.I. with either a laid back (young audience friendly!) play-through, or a hardcore classic mode, complete with game overs instead of restarting at the first stage!

from GoNintendo