| Achievement | How to unlock
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|---|
| Back to the ice age | Use the Freeze Monster Special from your inventory 50 times.
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| Be Gone! | Use the Shotburst Special from your inventory 50 times.
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| BLAST! | Use the Dynamite Special from your inventory 50 times.
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| Bonfire | Use the Molotov Special from your inventory 50 times.
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| BOOM! | Use the Bomb Special from your inventory 50 times.
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| Bounty Hunter | Collect 10000 money in a single play through.
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| Bullet Dodger | Kill 20 enemies in a single run without losing any health.
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| Chaos | Destroy the Chaos Engine.
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| Cleared Fortesque Mansion | Clear world 3, The Fortesque Mansion.
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| Cleared The Forest | Clear world 1, The Forest.
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| Cleared The Workshops | Clear world 2, The Workshops.
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| Death from below | Use the Ground Mine Special from your inventory 50 times.
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| Doc | Use a first-aid kit 50 times.
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| Double Chaos | Destroy the Chaos Engine with 2 players alive.
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| First One is the Hardest | Kill your first enemy.
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| Hard Nailed | Complete the campaign in a single run.
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| Here boy! | Use the Distract Monster Special from your inventory 50 times.
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| Huntsman | Kill 500 enemies in a single play through.
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| Learning Curve | Die 100 times.
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| Locksmith | Find 28 gold keys in a single run.
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| Maxed-out | Fully upgrade the Mercenary character.
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| No 'I' in Team | Resurrect 10x dead characters in co-op games.
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| Perfect Day | 24 hours played in total.
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| Pwned! | Reach Game Over with less than 1000 score.
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| Ransacked | Fully upgrade the Thug character.
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| Refined | Fully upgrade the Gentleman character.
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| Root of all Evil | Collect 50000 money.
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| Selfish | Fully upgrade the Brigand character.
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| Six Shooter | Complete single-player campaign playing as all six characters.
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| Specialist | Use 50 Specials from your inventory.
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| Super Frog Killer | Kill 500 Frogs.
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| Supremacy | Fully upgrade a single statistic for any character.
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| Transcendence | Fully upgrade the Scientist character.
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| Ultimate Weapon | Fully upgrade the Navvie character.
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