Mechanic I
Not unlocked yetUpgrade 50 towers.
Mechanic II
Not unlocked yetUpgrade 300 towers.
Mechanic III
Not unlocked yetUpgrade 1500 towers.
Annihilator of Totems I
Not unlocked yetDestroy 40 totems.
Annihilator of Totems II
Not unlocked yetDestroy 200 totems.
Master Strategist I
Not unlocked yetWin 5 story levels on 3 stars.
Master Strategist II
Not unlocked yetWin 10 story levels on 3 stars.
Master Strategist III
Not unlocked yetWin 20 story levels on 3 stars.
Master Strategist (Survival 1)
Not unlocked yetComplete the level without using utility towers (Prime injector, Slow, Stun, Accursed and Detector towers)
Provocation (Survival 1)
Not unlocked yetSummon Next Wave 200 times in a battle.
Master Strategist (Survival 2)
Not unlocked yetComplete the level without using utility towers (Prime injector, Slow, Stun, Accursed and Detector towers)
Master Strategist (Survival 2)
Not unlocked yetComplete the level without using utility towers (Prime injector, Slow, Stun, Accursed and Detector towers)
Wizard (Level 1)
Not unlocked yetUse magic 12 times during the battle.
Economics (Level 1)
Not unlocked yetSave 200 Prime by the end of the level.
Only Pawns (Level 2)
Not unlocked yetComplete the level without upgrading a tower.
Provocation (Level 2)
Not unlocked yetSummon Next Wave 5 times in a battle.
Master Strategist (Level 3)
Not unlocked yetComplete the level without using towers which target both air and ground enemies.
Master Strategist (Level 3)
Not unlocked yetComplete the level without using towers which target only air enemies.
Dismantler (Level 4)
Not unlocked yetSell 10 towers in one battle.
Master Strategist (Level 4)
Not unlocked yetComplete the level without using towers which deal area of effect damage (splash, cone, chain).
Cold Calculation (Level 5)
Not unlocked yetComplete the level building less than 9 towers.
No Magic (Level 5)
Not unlocked yetComplete the level without using any magic.
Only Pawns (Level 6)
Not unlocked yetComplete the level without upgrading a tower.
Master Strategist (Level 6)
Not unlocked yetComplete the level without using towers which range more then 300.