Mechanic (Level 13)
Not unlocked yetUpgrade 5 towers to level 3.
On the Verge (Level 13)
Not unlocked yetComplete this level with 1 life.
Battle Mage (Level 14)
Not unlocked yetInflict 5000 damage using magic.
Builder (Level 14)
Not unlocked yetBuild 30 towers during battle.
Economics (Level 15)
Not unlocked yetSave 150 Prime by the end of the level.
Master Strategist (Level 15)
Not unlocked yetComplete the level without using a Stone Tower.
Master Strategist (Level 16)
Not unlocked yetComplete a level without detecting invisible enemies.
Cold Calculation (Level 16)
Not unlocked yetComplete the level building less than 11 towers.
On the Verge (Level 17)
Not unlocked yetComplete the level with 1 life.
Only Pawns (Level 17)
Not unlocked yetComplete the level without upgrading a tower.
Economical (Level Boss 1)
Not unlocked yetSave 150 Prime by the end of the level.
No Magic (Level Boss 1)
Not unlocked yetComplete the level without using magic.
Economical (Level Boss 2)
Not unlocked yetSave 180 Prime by the end of the level.
Only Pawns (Level Boss 2)
Not unlocked yetComplete the level without upgrading a tower.
Economical (Level Boss 3)
Not unlocked yetSave 225 Prime by the end of the level.
No Magic (Level Boss 3)
Not unlocked yetComplete the level without using magic.
Only Pawns (Level Boss 4)
Not unlocked yetComplete the level without upgrading a tower.
Economical (Level Boss 4)
Not unlocked yetSave 175 Prime by the end of the level.
Economical (Level Boss 5)
Not unlocked yetSave 275 Prime by the end of the level.
No Magic (Level Boss 5)
Not unlocked yetComplete the level without using magic.
Vow of Silence (Level Boss 6)
Not unlocked yetComplete the level without using magic.
Provocation (Level Boss 6)
Not unlocked yetSummon Next Wave 10 times during battle.
Defender I
Not unlocked yetBuild 200 towers.
Defender II
Not unlocked yetBuild 800 towers.