Use CPU Characters in Battle Mode
First finish the challenge level 5 in each mode. Then go to the battle mode character select screen HOLD Z and press A

All Guardian Armor
There are four pieces of armor in the second attack. The Head: Unlimited Remote Control, The Body: Easier Recovery, The Arms: Unlimited Bomb Throw, The Legs: Unlimited Kick Bombs.

To get the Guardian armor you have to get certain bombs and in the right place.

The Head: to get the head, go to the nature planet and go to the door with the steel door with the swirl on it. Throw a shadow bomb at it and cross the lava with an ice bomb.

The Body: to get the body, go to the wind stage, to the place with the four statues, go up the stairs, throw an electric bomb in the air and blow the pillar up, place a wind bomb and blast yourself to the other end.

The Arms: Water stage, to the right, metal pillar, earth bomb.

The Legs: In the casino stage beat Zhaona and go to the hall with the two card blugers and go threw the place were the bunny was.
(P.S. the parts are in electric force fields, blow up with electric bombs.)

Secret Boss
To get this you need Bulzeeb's and Zohina's stones. (Light and Shadow) Go to the Warship noah and fight Lilith. Get hit by her instant knockout and watch a movie. You will be revived. Get to Rukifelth and beat him and Sthertot 1. After that a different movie happens. You now have to fight Ultra Sthertot with only fire bombs. You have to throw bombs into the jewel on him. He has stronger attacks than the angel and all does 2 damage.

Get King & Knights Mode
Use the Battle Royal to win the gold cup

Get Battle Royal Mode
Use survival mode and win the gold cup

Get Score Attack Mode
Use key trial mode and win the gold cup

Get Key Trial Mode
Use King & knights mode and win the gold cup