Cold Calculation (Level 7)
Not unlocked yetComplete the level building less than 7 towers.
Lesser Magic (Level 7)
Not unlocked yetComplete this level using magic no more than 3 times.
No Magic (Level 8)
Not unlocked yetComplete the level without using any magic.
Economics (Level 8)
Not unlocked yetSave 200 Prime by the end of the level.
Master Strategist (Level 9)
Not unlocked yetComplete the level without using utility towers (Prime injector, Slow, Stun, Accursed and Detector towers)
Master Strategist (Level 9)
Not unlocked yetComplete the level without using towers which target only air enemies.
No Magic (Level 10)
Not unlocked yetComplete the level without using any magic.
Master Strategist (Level 10)
Not unlocked yetComplete the level without using towers which deal area of effect damage (splash, cone, chain).
Master Strategist (Level 11)
Not unlocked yetComplete the level without using towers which range more then 300.
Economics (Level 11)
Not unlocked yetSave 300 Prime by the end of the level.
Provocation (Level 12)
Not unlocked yetSummon Next Wave 8 times in a battle.
Only Pawns (Level 12)
Not unlocked yetComplete the level without upgrading a tower.
Mechanic (Level 13)
Not unlocked yetUpgrade 10 towers to level 3.
On the Verge (Level 13)
Not unlocked yetComplete this level with 1 life.
Battle Mage (Level 14)
Not unlocked yetInflict 50000 damage using magic.
Builder (Level 14)
Not unlocked yetBuild 30 towers during battle.
Economics (Level 15)
Not unlocked yetSave 200 Prime by the end of the level.
Master Strategist (Level 15)
Not unlocked yetComplete the level without using towers which target both air and ground enemies.
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 9 towers.
On the Verge (Level 17)
Not unlocked yetComplete this level with 1 life.
No Magic (Level 17)
Not unlocked yetComplete the level without using any magic.
Economics (Level Boss 1)
Not unlocked yetSave 250 Prime by the end of the level.
No Magic (Level Boss 1)
Not unlocked yetComplete the level without using any magic.