Here is the full list of all 45 Flagsplosion achievements.
Solve a flag on its birthday.
Correctly solve eight flags with red in a row.
Choose incorrectly on a flag that has its name on it in big letters.
Unlock your first flag in the Encyclopedia.
Unlock fifty flags in the Encyclopedia.
Unlock one hundred flags in the Encyclopedia.
Unlock two hundred fifty flags in the Encyclopedia.
Unlock all flags in the Encyclopedia.
Play Endless Mode.
Reach a score of ten in Endless.
Reach a score of twenty in Endless.
Reach a score of thirty in Endless.
Reach a score of forty in Endless.
Reach a score of fifty in Endless.
Reach a score of one hundred in Endless.
Earn a gold star on a flag.
Earn two gold stars on a flag.
Earn three gold stars on a flag.
Earn four gold stars on a flag.
Earn five gold stars on a flag.
Earn six gold stars on a flag.
Earn seven gold stars on a flag.
Earn eight gold stars on a flag.
Earn nine gold stars on a flag.
Earn ten gold stars on a flag.
Earn twenty gold stars on a flag.
Complete a training level.
Complete ten training levels.
Complete twenty-five training levels.
Complete fifty training levels.
Gain gold on all training levels.
Unlock five hundred flags in the Encyclopedia.
Complete one hundred training levels.
Have a gold star on the flags who have a single gold star.
Unlock a hidden bonus game mode.
Complete Canton mode
Complete both Canton mode and Un-Canton mode without any wrong answers
Reach a score of five in Endless Reverse
Reach a score of ten in Endless Reverse
Reach a score of fifteen in Endless Reverse
Reach a score of twenty in Endless Reverse
Reach a score of twenty-five in Endless Reverse
Reach a score of fifty in Endless Reverse
Finish with a score of twenty-five or more in Endless Hard or Reverse Hard
Play every mode in Flagsplosion