Kill one enemy.
Upgrade all basic tower types to level 3.
Earn 15 stars.
Open 5 information cards.
Call all waves early in a single mission.
Earn 30 stars.
Call a wave within 3 seconds of the icon showing up.
Build 100 towers.
Kill 2.500 enemies.
Kill 100 enemies with meteor showers.
Change soldiers' rally point 200 times.
Complete Stage 1.
Earn 45 stars.
Build 150 towers.
Defeat Quincon, the Jungle King.
Kill 10.000 enemies.
Have your soldiers regenerate 50.000 life.
Train 1.000 soldiers.
Send 1.000 soldiers to their deaths.
Build all 8 tower specializations.
Build a specialist tower of each type on any stage.
Defeat the Dark Lord and save the realm!
Build on all holders on any given campaign stage.
Find the singing frog.
Make a Desert Bantah move.
Win stage 4 without the Worm eating soldiers.
Hire 10 or more mercenaries.
Have a genie polymorph 10 enemies.
Kill 30 enemies with the pirate ship's cannons.
Find a mermaid.
Kill a Sand Wraith before it summons any Fallen.
Have the Spear maidens perform 50 whirlwinds.
Find the secret message.
Call 10 waves early.
Feed over 50 creatures to the Snapvines.
Save a captive princess.
Find all 3 alien hunters.
Clean debris from 10 holders.
Kill 30 Parasytes or Reapers.
Kill 100 Tribal zombies.
Defeat 10 climbing enemies.
Help Indiana find the secret passage.
Have your assassins steal 10.000 gold.
Have your assassins dodge 1000 attacks.
Defeat Nazeru, the red efreeti.
Apply one Falconer bonus to 4 towers.
Have the Crossbow forts shoot 10.000 bolts.
Kill over 100 enemies with the drill.
Set 20 enemies on fire at the same time.
Pick up 500 enemies with the Twister spell.
Deal over 30.000 damage with Critical Mass.
Have one templar revive 5 times in a row.
Kill 100 enemies by letting them bleed to death.
Silence 70 spellcasters with the Spirit Totem.
Weaken 100 enemies with the Totem of Weakness.
Level up any hero.
Have 20 skeleton minions active at the same time.
Have your Death Riders claim 99 lives.
Build 3 Mechas on any one stage.
Have your Mechas defeat 500 enemies.
Level up any hero to level 5.
Level up any hero to max level.
Complete a desert stage without the hero dying.
Complete a jungle stage without the hero dying.
Complete an underground stage without the hero dying.
Have a single dwarf soldier heal a total of 500 life.
Build 30 towers.
Sink 5 enemy Gunboats.
Kill 3 Bluegales while under a storm.
Kill 20 Sharks before they reach the shore.
Kill 50 swimming enemies.
Defeat Leviathan, the Underwater God.
Survive 13 full moons without losing a single life.
Destroy 100 zombies under a full moon.
Complete the desecrated grove without any ghosts escaping.
Defeat 6 Phantom Warriors before they harm any soldier with their aura of death.
Defeat Vasile, the Everlasting Prince.
Kill 500 enemies.
Find the hidden mortal reptilian combatant.
Defeat Xyzzy, the Saurian King.
Complete the Campaign in Normal difficulty.
Complete all Heroic stages.
Complete all Iron stages.
Complete the campaign in Veteran mode.
Use Rain of Fire 5 times in a single stage.