Follow the indicated steps to earn the corresponding Steam achievement. To view your achievement progress and stats, open the Steam client, select "Community", then search for the game hub for "Ukrainian Ninja". Click the "View Stats" option in the drop down list, then select the option that displays the achievements for your account.

Achievement	How to unlock
Bonus Round Master	Complete all Bonus Rounds in all Worlds.
Bonus Round Pro	Complete all Bonus Rounds in a Single World.
Chemical Cleaner	Complete World 7 Chemical Factory.
City Cleaner	Complete World 3 The City.
Coin Collector	Collect the Special Coins in all Worlds.
Convoy Cleaner	Complete World 6 Convoy.
Forest Cleaner	Complete World 5 Hidden Forrest.
Sewer Cleaner	Complete World 4 The Sewers.
Stunt Man	Complete All Stunts in all Worlds.
Townstead Cleaner	Complete World 1 Townstead.
Train Cleaner	Complete World 2 Trainride.
Zombie Cleaner	Complete World 8 Return to City.