how to win the akatsuki's invasion level?

You could try team genius.I think they have the best abilities out of all the teams for when you get to the hard levels like legendary sannin and akatski's invasion.If not you can try maidens in love(sakura,ino,hinata).They recover more health after every battle so you will start of with more for the next fight.

The Trick in this level is "SPEED" and "AGILITY". You need to keep moving, keep substituting, and recharge your chalkra while your opponent breaks objects. (NOTE: If you're struggling a lot, Orochimaru's "Five-Pronged Seal" really helps) I used that Technique on every opponent I faced and then I used Dash attacks and combos on him until the seal state wore off on my opponent, then I did the same thing again until I completed that stage. Then I did the same thing to every opponent on the next stage, and so on and so forth until I reached the "Itachi Uchiha/Kisame Hoshigaki stage. Then I used all team skills before the final fight, and surprisingly, Itachi, and Kisame were a walk in the park for me. The best Team to use against the "Akatsuki Invasion" level is the "Legendary Sanin"(Orochimaru, Jiraiya, Tsunade) The skills are Needle Jizo(Jiraiya), Five-Pronged Seal(Orochimaru), Medical Ninjutsu(Tsunade), and Aurora of Legends(Team Skill). Remember to save these Skills for the final stage, and you'll breeze through the competition. I hope this Helps.

I win akatsuki's invasion by using custom team (orochimaru,gaara,tsunade) don't use any skills just use it when your in last stage,just use subtitution jutsu it helps,your second chance here is the hidden spikes. When your enemy is a little closer drop the spikes,so you have a time to charge chakra and to hit him a secret technique,but don't forget the sub. Jutsu.go and show to itachi and kisame the best you can.I hope this helps to you.

i suggest u get two characters of ur choice and ur final character ino poison itachi or kisame and just try to stay in battle long and wait for his health to go down then finish him

Ok so everyone saying the legendary sanin will,you guys are right but instead take out one of the legendary sanin and put a healer why? Will they heal more health next battle and best healer would be sakura but if you not good with her go to where you upgrade you're characters and upgrade her def,and attack so she can be real useful and if you don't like her use ino to poison you're way out and wait til it lowers down and then use you're finisher and poison them again with the finisher,if you don't like healers use Gaara,Naruto Sasuke or best for you :D hope this help