Super Smash Bros. Cheats - 3DS

Alternate Balloon Fight Grass
Hold [L] when selecting the Balloon Fight stage to randomly change the stage's grass color. Possible alternate grass colors are Orange and Blue. This does not work on the Omega version of the Balloon Fight stage.

Hidden Milestones
Achieved a high score of 100 in Rival Smash - Die in Rival Smash with at least 100 more KOs than your rival. Can be completed by using Kirby's stone ability repeatedly.
Blew up 5,000 targets and/or obstacles in Target Blast - Destroy 5,000 objects cumulatively in Target Blast.
Defeated 10 enemies in Cruel Smash - Die in Cruel Smash with at least 10 KOs. Can be completed using Kirby's Inhale ability to spit Miis out beneath the stage where they can't recover.
Defeated 300 enemies in Endless Smash - Die in Endless Smash with at least 300 KOs.
Earned 300,000 points in Target Blast - As Villager, perform a dash attack on the bomb, jab it to 25%, and input an uncharged side smash right before the timer changes to 5.
Exploded 100 bombs in Target Blast - Play Target Blast 50 times.

Stage Selection on Random
Unlock all Stages.

True All Star Mode
True All Star Mode is basically All Star Mode but with all the characters. To unlock this just unlock all characters.