| Achievement | How to unlock
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| Alone Again, Naturally | Neutral Ending.
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| Always Time for Dreams | Sleep in the Bed During the Maid Investigation.
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| Amazing First Impression | Have Iris Analyze You.
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| And We've Learned NOTHING! | Good Ending.
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| Bonnie and Clyde | Bad Ending.
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| Brett and Butter | Pair up with Brett.
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| BUSTED! | Fight the Girlfriend Lie.
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| C'mon, Man | Fight the "I'm not drunk!" Lie.
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| Duck Soup | Find the Funny Glasses.
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| Five More Minutes | Rest Two Times in a Row.
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| Five Second Rule | Find the Cherry Candy in the Trash.
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| Good Apollo | Poke Efi Three Times While Sleeping.
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| Guy Pierce | Bad Ending, Lose to William.
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| Happosai | Put Panties on your Head.
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| Hard Knock Life | Get Bad Ending from Losing Boss Battle.
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| Have you no Shame? | Steal the Candy from Keith and Rachel's House.
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| IDDQD | Find the Legendary Knife and Cookie.
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| Iris Up Your Coffee? | Pair up with Iris.
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| Let's Go Exploring! | Good Ending.
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| Me and Neily McGee | Pair up with Neil.
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| Onto the Next Adventure! | Finish LiEat 1.
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| Pants on Fire | Find Big Liar Equipment.
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| Pied Piper | Fight Three Blue Rats.
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| Satanic Messages! | Play Liar (music track) at the Slowest Speed in Post-game.
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| Serious Sweet Tooth | Eat 15 Cookies.
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| Shoulda Gotten Apple Care | Find out about Hal's Cracked Phone.
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| That was for Orphans! | Steal the Money from the Bookshelf.
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| To the Flame! | Defeat a Red Moth.
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| You have Chosen...Poorly | Get Bad Ending from Wolf Encounter.
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| You're Looking Buff | Get Efi to Level 10.
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