Damage the following Bosses using the corresponding techniques. Defeat the boss, then the next level will then be in Hard mode.
BOSS - TECHNIQUE Forest Shredder (Wolf Kingdom) - Reflect his dynamite back at his face. Wolf King (Deep Underground) - Wait for him to stand on top of a breakable floor block. Hit him until laughs, then drill attack the floor so that he falls. Axel Gear (Return To Zephyrus) - Have him get hit by the tracking purple ball attack that he uses.
ACHIEVEMENT - HOW TO UNLOCK Elhorn Tourist (30 points) - Completed all stages. Zephyrus Saviour (35 points) - Completed Arcade Mode on Normal. Devotindos Defiler (25 points) - Completed Arcade Mode on Hard in a Single Playthrough. Legendary Possum (20 points) - Completed Gold Sparkster Mode. Impatient Hero (20 points) - Completed all stages below par time. Spark Dog Millionaire (15 points) - Completed Arcade Mode scoring 1,000,000 or more. Redoubtable Runner (15 points) - Completed Arcade Mode on Hard within 60 minutes. Ferocious Flier (10 points) - Completed 1.2 having defeated all enemies. Wolf Connoisseur (10 points) - Completed 2.1 having collected all pickups. Nimble Knight (10 points) - Completed 3.2 without taking damage. Burst Friends (5 points) - Defeat 5 enemies in a single Rocket Burst or Drill attack. Woodland Bouncer (5 points) - Defeat 3 enemies with a single reflected projectile