| Achievement | How to unlock
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| - Use the Freeze Monster Special from your inventory 50 times.
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| - Use the Shotburst Special from your inventory 50 times.
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| - Use the Dynamite Special from your inventory 50 times.
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| - Use the Molotov Special from your inventory 50 times.
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| - Use the Bomb Special from your inventory 50 times.
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| - Collect 10000 money in a single play through.
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| - Kill 20 enemies in a single run without losing any health.
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| - Destroy the Chaos Engine.
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- Cleared Fortesque Mansion
| - Clear world 3, The Fortesque Mansion.
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| - Clear world 1, The Forest.
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| - Clear world 2, The Workshops.
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| - Use the Ground Mine Special from your inventory 50 times.
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| - Use a first-aid kit 50 times.
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| - Destroy the Chaos Engine with 2 players alive.
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| |
| - Complete the campaign in a single run.
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| - Use the Distract Monster Special from your inventory 50 times.
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| - Kill 500 enemies in a single play through.
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| |
| - Find 28 gold keys in a single run.
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| - Fully upgrade the Mercenary character.
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| - Resurrect 10x dead characters in co-op games.
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| - 24 hours played in total.
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| - Reach Game Over with less than 1000 score.
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| - Fully upgrade the Thug character.
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| - Fully upgrade the Gentleman character.
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| |
| - Fully upgrade the Brigand character.
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| - Complete single-player campaign playing as all six characters.
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| - Use 50 Specials from your inventory.
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| - Fully upgrade a single statistic for any character.
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| - Fully upgrade the Scientist character.
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| - Fully upgrade the Navvie character.
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