I hope this helps anyone because I'm fairly new myself, this is my second week playing Naruto online and I discovered that you'll have to change up your team to gain the advantage or to even up the odds. I have two strategies that I use, I like playing around with Clones so I use Kakashi, Kiba, Kankuro, and main. It does take alot of training but it paid off, my team currently has 1k of power to each of them and they also have float, ability.
This strategy doesn't always work because you do have your plots where you can be using clones but have certain abilties that doesn't work all that well, so I switch it up with Kakashi, Shikamaru, Sakura, and main. It's work well for me. In the begining stages Haku will be a life saver so It's best to put him behind your main character for protection so when it's time for him to use his mirror attack he's safe with all his life points. That's all I can think of now, constructive critism, questions, and comments, are always welcome.
If you got some awesome techniques yourself, post them!