| Achievement | How to unlock
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| Afternoon Tea | Drink 39 cups of perfect tea.
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| Architeuthis | Defeat the giant space kraken.
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| Aronnax | Finish 39 Days to Mars with two players.
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| Cutty Sark | Complete 39 Days to Mars in less than 30 minutes.
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| Darwin | Capture 39 specimen for the specimen tank.
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| Drawing Board | Fail everything and still make it to Mars.
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| Duct Tape | Fix the water leak on the first attempt.
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| Edgeworth-Kuiper | Break 39 asteroids while mining for coal.
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| Flying Cloud | Complete 39 Days to Mars in less than 50 minutes.
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| Il Terribile Pescecane | Get eaten by the giant space kraken.
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| Indefatigable | Play through 39 Days to Mars in one sitting.
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| Morning Tea | Make 39 cups of awful tea.
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| Nemo | Finish 39 Days to Mars with one player.
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| Newcastle | Collect enough coal without running out of oxygen.
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| Plain Sailing | Finish 39 Days to Mars without ever failing a puzzle.
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| Schiaparelli | Crash on Mars.
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| Sepia | Capture all the specimens without cleaning up.
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| Skeleton Key | Embark on an adventure without completing the volatile helioscopic password generator.
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| Snag | Fail at something.
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| Sojourner | Land on Mars.
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| Squid-Ink-B-Gon | Capture all the specimens and clean up afterwards.
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| Switchboard | Fix the ships controls on the first attempt.
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| [H] | Leave the fire hydrant running when you embark.
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