- Bonus skins
Successfully complete the indicated task to unlock the corresponding skin:

Axel Gear	Successfully complete Arcade mode on the Hard difficulty, using the secret damage move on every Boss.
Gold Sparkster	Successfully complete Gold Sparkster mode.

- Trophies
Successfully complete one of the following tasks to get a trophy:

Bronze Trophies
Burst Friends	Overcome 5 enemies in a single Rocket Burst or Drill attack.
Wolf Connoisseur	Finishd 2.1 having collected all pickups.
Woodland Bouncer	Overcome 3 enemies with a single reflected projectile.
Elhorn Tourist	Finishd all stages.
Nimble Knight	Finishd 3.2 without taking damage.
Ferocious Flier	Finishd 1.2 having defeated all enemies.
Zephyrus Saviour	Finishd Arcade Mode on Normal Difficult Level.
Silver Trophies
Redoubtable Runner	Finishd Arcade Mode on Hard within 60 minutes.
Devotindos Defiler	Finishd Arcade Mode on Hard in a Single Playthrough.
Spark Dog Millionaire	Finishd Arcade Mode scoring One Million Points or more.
Impatient Hero	Finishd all stages below par time.
Gold Trophies
Legendary Possom	Finishd Gold Sparkster Mode.

- Secret damage moves
Damage the following Bosses with the indicated technique. If done correctly, you will hear a sound. Overcome the boss, and the next level will then be in Hard mode.

Axel Gear	Have him get hit by the tracking purple ball attack that he uses.
Wolf King	Wait for him to stand on top of a breakable floor block. Hit him until laughs, then drill attack the floor so he falls.
Wolf Robot	Reflect his dynamite back at his face.

- Gold Sparkster mode
Successfully complete Arcade mode on the Hard difficulty, using the secret damage move on every Boss.

- All skins
At the 'Push Begin' screen, press Up(2), Down(2), Left, Right, Left, Right, O, X(2) to unlock all skins at the 'Unlockables' menu. If you entered the code correctly, you will hear a sound.