| Achievement | How to unlock
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|---|
| :) (11) | Complete Chapter 3.
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| A (semi) private moment (11) | Find the hidden picture in the finale.
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| A meeting of the minds (11) | Complete the finale.
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| Actually reading the terms and conditions (11) | Listen to all of the bartender's disclaimers without skipping any.
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| At least he's good at math (11) | Experience every excerpt from Newton's fanfiction.
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| Blasts from the past (11) | Dodge Lupin's laser shots until he runs out of one-liners.
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| Did you seriously just GUESS that? (11) | Set the correct combination for the Vitruvian sign without first finding the clue for it.
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| Dream wrangler (11) | Help the sleeping guard catch the centaur.
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| DUN-DUN-DUN-DUNNNNNN (10) | Complete Chapter 1.
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| Frustrated fireman (10) | Hit the unbreakable emergency glass with the hammer three times.
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| If it doesn't work this time I quit11) | Perform a toast with the mug filled to each level.
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| If it looks like a duck... (11) | Check yourself out in the mirror.
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| Let's do the time warp again! (11) | Reset your progress on a chapter you've 100% completed.
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| Librus distractificus! (11) | Find the hidden picture in Chapter 2.
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| On the shoulders of nitwits (11) | Complete Chapter 2.
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| Plumbing the depths (11) | Explore the sleeping plant for evidence of a previous meal.
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| Real-life time traveler (11) | Start up the game before a certain other time-traveling adventure game was even released.
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| Subito fortissimo (10) | Find the hidden picture in Chapter 1.
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| World's worst hider (11) | Get kicked out of Newton's yard in three different ways.
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| You didn't hear it from me, but... (11) | Find the hidden picture in Chapter 3.
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