Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Challenge	Win the Sixth challenge by three stars.
Defeat the enemy	Win the Third challenge by three stars.
Enemies are destroyed	Win the Fifth challenge by three stars.
Fiery battle	Win the Eighth challenge by three stars.
Great battle	Win the tenth challenge by three stars.
Great victory	Win the Second challenge by three stars.
Large army	Win the Fourth challenge by three stars.
Oh, a powerful enemy!	Win the twelveth challenge by three stars.
Oh, the enemies are attacking	Win the Eleventh challenge by three stars.
Save the Mars	Win the first challenge by three stars.
Strengthen the forces	Win the Seventh challenge by three stars.
Unfinished war	Win the Ninth challenge by three stars.