From the main menu select
Free Battle
Tournament
Free Tournament
Single Match
Click A without editing the number of players and select the AI difficultly to super easy. Now select Hinata and random select your other opponents.Start the tournament by pressing A and select the Hidden Leaf village (Reconstruction). Once the fight starts run up to the AI press Y then B and you should unlock
.
Now try to get your enemy towards the buildings (You should see the air start to crack) If you manage to hit them through you it will give you the win and the achievement Blasting Off.
Now beat the second opponent to get your achievement First Championship.