Unlock the Second Letter
Acquire 1500 Gold in total
Unlock Secret Hero: Ruith
Unlock Secret Hero: Zephiriel
Unlock Secret Hero: Jachim
Unlock Secret Hero: Sachael
Unlock all Heroes
Win a mission with a Ballista shot
Unlock all Fire Projectile types
Unlock all Ice Projectile types
Unlock Poison Projectile types
Unlock the Third Letter
Mine 500 Crystals
Acquire 2000 Crystals in a single battle
Mine a Crystal beside the enemy base
Have a Miner survive for 2 minutes
Win a Battle with 7 fully upgraded troops
Have a unit attack 5 enemies at the same time
Summon 1000 Troops
Have 20 units on the screen
50 Units lost during a mission
Defeat all type of Enemy Troops
Unlock the Fourth Letter
Unlock the Fifth Letter
Unlock the Sixth Letter
Unlock the Seventh Letter
Unlock the Eighth Letter
Win 10 Skirmishes Battle
Win 50 Skirmishes Battle