| Achievement | How to unlock | Points
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- "12:15 (Earthly Time) on Next Tuesday Night"
| - Kill hundred enemies with an Hatchet.
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- "Dark and Silent and Complete"
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- "I will chop your heads off!"
| - Kill 25 enemies with an Hatchet.
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| - Die fifty times in a single room.
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- "Permission to Come Aboard?"
| - Kill hundred enemies with a fish.
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- "The Honeymoon Was Killer"
| - Kill fifty enemies with an Hatchet.
| |
- "There Are Other Worlds Than These"
| - Die hundred times in a level.
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- An American Black Wolf in Tarrytown
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- Bison bison Bison bison bison bison Bison
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| - Finish any level in one continuous Combo.
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- Cleverest bird in the sky
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- His Darkest and Most Precious Secrets
| | |
- Hold Me Closer, Bullet Dancer
| - Get a perfect score for Mobility in any level.
| |
| - Get a score greater than 1,000,000.
| |
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| - Search for the last enemy of an area.
| |
| - Finish any level in Act Two in under 3.5 minutes.
| |
| - Die at the hands of the last enemy in an area.
| |
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| - Don't use any weapons for a whole level.
| |
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- Spry scout of the underbrush
| | |
| - Get Perfect Timing on half the kills of a level.
| |
| - Kill every enemy in a level with a different weapon.
| |
- Took a Wrong Turn at Albuquerque
| - Kill hundred enemies with a carrot.
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- Underappreciated ungulate
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