No missable achievements (plus 14 unknown)
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Destroy 1000 enemies
Allow only one enemy to attack the base's gates throughout a level
Use 200 spells
Complete all levels of an episode with three stars
Lose three times in a row
Complete a level with one heart remaining
Earn 180 stars
Buy all upgrades for one cannon
Kill 5 enemies in one shot
Get a magical ability to the maximum level
Build the upgrades of all types of cannons on a single level
Complete a level without using spells
Complete the game
Complete all levels with 3 stars