Complete the following tasks to unlock the corresponding achievement. To view your achievements and stats in Steam, select "Community", then "My profile", then "View all my games", then the game and view stats.

Achievement	How to unlock
Bunker Buster	Complete world 3.
Burst Friends	Defeat 5 enemies in a single Rocket Burst or Drill attack.
City Saviour	Complete world 1.
Devotindos Defiler	Completed Arcade Mode on Hard.
Elhorn Tourist	Completed all stages.
Ferocious Flier	Completed 1.2 having defeated all enemies.
Impatient Hero	Completed all stages below par time.
Legendary Possum	Completed gold sparkster mode.
Nimble Knight	Completed 3.2 without taking damage.
Redoubtable Runner	Completed Arcade Mode on Hard within 60 minutes.
Return of the Rocket Knights	Complete world 4.
Spark Dog Millionaire	Completed Arcade Mode scoring 1,000,000 or more.
Wolf Connoisseur	Completed 2.1 having collected all pickups.
Wolf Kingdom Conqueror	Complete world 2.
Woodland Bouncer	Defeat 3 enemies with a single reflected projectile.
Zephyrus Saviour	Completed Arcade Mode on Normal.