Here is the full list of all 12 Cannons-Defenders: Steam Edition achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Kill the first enemy
To pass at least one level without losing not one cannon
Kill a total score of 50 soldiers of fortune
Kill a total score of 20 drones
Earn all of the game experience of not less than 5000 (medals)
As you progress through the game to get rank of " General". Ranks are assigned due to the received "Stars" at the end of the level. In total, you need to pass the levels by 23 stars
It is necessary to unlock all levels
Kill a total score of 20 super-soldiers(improved)
Go To The panel "Upgrade" to unlock all modifiers
Go to The panel "Upgrade" to deflate all improvement to 100%
Kill the final boss at the end of the game
To open a bonus level you must unlock all the achievements. Bonus level It will appear in the "Level choice"