Another tricky part is the middle section of Mirai Nikki which feels a bit stretched, where similar stuff seems to be going on and on without plot taking any turns. Luckily, in last third of the show, plot finally takes a turn for the better. It's all set up in a way that wondering how it'll end is what's keeping you watching, because the ending holds promise of being interesting. And if the ending was cheap, this show would plummet just like that. Fortunately that's not the case, and a large chunk of anime is dedicated to the ending arc. Other than all of it being a bit fantasy with added timeline changing, therefore stretching logic in places, the only actual complaint is that too often the story doesn't get explained very well, so you end up being confused a lot, only to later realize what's going on.
Some episodes/arcs are great, while some are sucky to the point where removing them would hardly influence the story at all. I also feel that sometimes the convolution was used as a cop out, but I was confused enough that I couldn't tell anything for sure so it's hard to say now. Some of the time-manipulation is very clever, to the point where you need to pause and think to realize what just happened, while some of it is downright moronic, strange.
Characterisation is surprisingly good. Characters really feel unique and real, at least the main cast. Yuno is such a great character that this is worth checking out for her alone. And she alone, is what got me through all the bad parts. Ending arc really has a redeeming quality, it far exceeded my expectations, and was very fun and memorable.
