Kill 10 enemies

Kill 10,000 enemies

Kill 1,000 enemies

Kill 100,000 enemies

Kill 1,000,000 enemies

Survive wave 2

Earn your first coin from a boss

Survive wave 10

Survive wave 20

Survive wave 30

Survive wave 40

Survive wave 50

Unlock all tower types

Reach player level 10

Reach player level 50

Reach the maximum player level

Build your first tower

Upgrade a tower to level 2

Upgrade a tower to level 3

Sell a tower

Reach wave 5

Have 10 towers standing at once

Have 20 towers standing at once

Have all 10 tower types on the field at once

Have 5 level 3 towers at the same time

Reach wave 15 and unlock the factory

Build your first conveyor belt

Build your first splitter

Build your first assembler

Produce your first material

Produce 100 materials in a single run

Produce 500 materials in a single run

Produce 5 different recipes in a single run

Produce 10 different recipes in a single run

Produce fire, frost and bolt ammo in a single run

Repair a wall with a repair kit

Defeat your first boss

Defeat 25 bosses

Reach wave 10 without losing a life

Reach wave 25 without losing a life

Reach wave 50 without losing a life

Survive wave 25 on Hard

Survive wave 50 on Hard

Survive wave 25 on Nightmare

Survive wave 50 on Nightmare

Earn a Tower Crystal

Play a multiplayer match

Spend a coin in the skill tree