| Achievement | How to unlock
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|---|
| A box full of joy! | Date Pandora.
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| Almost there... | Collect 38 hats.
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| Ancient romance | Open the door of the secret tomb.
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| Aquatic Abomination | Listen to the water theme song.
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| Awww man, here we go again. | Start a second playthrough.
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| Call in the Paparazzi | Collect 10 hats.
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| Chemotherapist | Cure Amadeus.
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| Classy! | Collect your first hat.
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| Clutch. | Escape the crashing plane.
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| DJ Troy | Tell the dancers about your new mixtape.
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| Double tap. | Push your luck in the saloon.
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| Ecologist | Only use one plug to get to Amadeus.
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| Elevator repair monster | Destroy the elevator.
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| Epic Stylist | Collect 20 hats.
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| Escape is the only option... | Date Patroclus.
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| Fashionable | Collect 3 hats.
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| Fleshy infiltration | Get to the abandoned meeting room.
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| Fully treat Amadeus | Fully damage Amadeus.
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| Headgear Collector | Collect all the hats.
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| Headpiece Scavenger | Collect 15 hats.
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| Helping arms | Escape the acid flooding cave.
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| Helping hand | Make the scientist in need fall.
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| I like France. | Date Paris.
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| It's okay to cry. | Die for the first time.
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| King Stealer | Steal the Rat King's crown.
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| Mad Hatter | Collect 30 hats.
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| Mission Impossible | Carefully pass the pod room.
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| Professional Struggle | Complete the campaign without dying once.
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| Prophet of the Swarm | Get bitten by three rats at the same time.
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| Psychedelic flying bait. | Get baited, son.
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| Romantic wild ride! | Date Ulysses.
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| Sun's out, guns out. | Reach the secret tanning spot.
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| Super Seducer | Date each of Agamemnus' Heads
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| These rats are chasing. | Escape the rat swarm.
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| You have peaked. | Create an arm circle.
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