Here is the full list of all 33 Heart of Smoke achievements.
Collect the first page in the game
Collect 99 pages
Collect 25% of the pages
Collect 50% of the pages
Collect 75% of the pages
Collect all the pages of the game
Collect all the lives in the game
Collect the first alchemical relic in the game
Collect all the alchemical relics in the game
Collect the first hidden item
Collect the first item inside wooden box
Check every checkpoint in the game
Complete the first bonus in the game
Complete all the bonus levels in the game
Finish the world 1
Finish the world 2
Finish the world 3
Finish the world 4
Finish the game
Finish all the colorchemy labs
Finish the game collecting and completing everything
Finish the game in less than 30 minutes
Finish the game without dying
Finish a level with a Smoke Buddy
Get every Smoke Buddy mount in the game
Win the first boss battle without dying
Win the second boss battle without dying
Win the third boss battle without dying
Win the fourth boss battle without dying
Win the fifth boss battle without dying
Fly for more than 5 minutes in total
Destroy every destructible robot mage (not boss) in the game
Use the switch character aim for 10 or more times