| Achievement | How to unlock
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|---|
| Celebrated ( 25 points ) | Collect all the medals.
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| Chain Gang ( 15 points ) | Kill 2 Malthusians within a timed chain attack.
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| Challenged ( 15 points ) | Complete the Challenge Room.
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| Davy Jones' Locker ( 15 points ) | Neutralize 10 Malthusians in underwater combat.
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| Drowned ( 10 points ) | Drown a Malthusian.
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| Honour ( 15 points ) | Collect 50% of the medals.
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| My Hero ( 10 points ) | Save Chief Billingham.
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| Private Eye ( 35 points ) | Collect all documents and objects.
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| Survivor ( 25 points ) | Complete the game.
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| Swept Off Their Feet ( 15 points ) | Sweep 3 Malthusians off their feet with water.
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| Tinker ( 10 points ) | Complete a hack.
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| Vengeance ( 10 points ) | Kill 5 Mathusians with fire or electricity.
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