Trophy Description - Defeated a boss without taking damage.

Trophy Type - Silver

The first boss "Chieftain" is very easy to beat. Just evade all of his attacks and use your Super Moves when possible. At some point he will fly to an elevated position and start throwing mines at you. You need to throw the mines back at him. During the rest of the fight you just need to punch him. Use your dash attack (right stick, then press square) to make sure he won't hit you when you get close.
Even though you fight Chieftain in chapter 3-4 for the first time, only chapter 3-5 counts for this trophy. The trophy can also be done via chapter select and works on any difficulty. You unlock chapter select after beating the game for the first time.