Kill monsters with all the ways possible.
Don't die once during the level.
Never have more than 300 gold during the level.
Build 8 towers in a single level.
Kill 100 monsters.
Kill 3 monsters with one sword slash.
Kill 4 monsters with one sword slash.
Kill 1000 monsters.
Kill 10 000 monsters.
Save 1000 gold.
Upgrade Garlic tower to the max.
Upgrade Electric tower to the max.
Upgrade Holy tower to the max.
Kill red monster of every kind using the sword.
Get knocked-out 5 times during the single level.
Die at 10th wave.
Earn 100 000 gold.
Get hit by the Red Lord. Don't die. Kill him. Easy.
Spend 20 hours in the game.
Discover the secret combo.
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