If in one stage you get the Gold Star Coin for
all three missions: Rescue, Battle, and Megazord,
there will be a Gold Star Coin on the area you
got all Gold star coins on in the Area Selection.
If you get a Gold Star Coin for all the areas, a
new stage will appear.
To do power punch hold down B. Then your ranger
will start to change colors next you let go of B
then you have it.