If I complete a game, I will generally feel that it was really good or I just needed the achievements.
With devil may cry, it was a mix of both. It started out amazing, with simple Y and X presses mixed with dodging. I understood it and was doing well.
But eventually I had to turn down the difficulty and lookup how to beat a lot of the bosses.
I really felt like this game started awesome and then maybe 20% of the way in it just drags all the way till maybe the last 15% of the game. I almost returned it without betting it but I'm glad I didn't or I would have missed a pretty cool ending sequence. Plus the later boss battles once you finally got to them were challenging which I guess can be a "plus"