| Achievement | How to unlock
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| Arcade Enthusiast! | Unlock all arcade games!
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| Arcade Gamer! | Unlock one arcade game!
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| Art Collector! | Buy one piece of sideart.
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| Art Expert! | Buy all pieces of sideart.
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| Competitive Watcher! | Look at one international leaderboard!
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| Fashionista! | Buy one piece of clothing.
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| Gotta' go fast! | Beat a Speed Running Mode!
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| Movie Watcher! | Watch one cutscene in the settings.
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| Music Hobbyist. | Listen to one track on any jukebox.
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| Playstyle Sensei! | Buy all Playstyles.
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| Playstyle Tinkerer! | Buy one Playstyle.
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| Shades for Days! | Buy all shaders.
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| Shop-a-holic! | Buy all pieces of clothing.
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| Slick Shades! | Buy one shader.
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| Slime-san Athlete! | Collect all the Apples in the game.
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| Slime-san Champion! | Beat all New Game PLUS levels in the game.
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| Slime-san Expert! | Beat all the Trophy times in the game.
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| Slime-san Master! | Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in the game.
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| Slime-san Novice! | Beat all levels in the game.
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| Socialite! | Talk to five citizens in Slumptown.
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| Special Level: Complete! | Unlock and beat level 101.
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| Special Level: Crushed! | Beat the trophy time of level 101.
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| Special Level: Destroyed! | Unlock and beat New Game PLUS level 101.
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| Target Mode Ace! | Beat all target mode challenges.
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| Target Mode Beginner! | Beat one target mode challenge.
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| Where's grandpa? | Find grandpa-san in Slime town.
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| World 1 Athlete! | Collect all the Apples in World 1.
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| World 1 Champion! | Beat all New Game PLUS levels in World 1.
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| World 1 Expert! | Beat all the Trophy times in World 1.
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| World 1 Master! | Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 1.
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| World 1 Novice! | Beat all levels in World 1.
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| World 2 Athlete! | Collect all the Apples in World 2.
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| World 2 Champion! | Beat all New Game PLUS levels in World 2.
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| World 2 Expert! | Beat all the Trophy times in World 2.
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| World 2 Master! | Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 2.
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| World 2 Novice! | Beat all levels in World 2.
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| World 3 Athlete! | Collect all the Apples in World 3.
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| World 3 Champion! | Beat all New Game PLUS levels in World 3.
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| World 3 Expert! | Beat all the Trophy times in World 3.
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| World 3 Master! | Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 3.
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| World 3 Novice! | Beat all levels in World 3.
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| World 4 Athlete! | Collect all the Apples in World 4.
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| World 4 Champion! | Beat all New Game PLUS levels in World 4.
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| World 4 Expert! | Beat all the Trophy times in World 4.
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| World 4 Master! | Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 4.
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| World 4 Novice! | Beat all levels in World 4.
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| World 5 Athlete! | Collect all the Apples in World 5.
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| World 5 Champion! | Beat all New Game PLUS levels in World 5.
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| World 5 Expert! | Beat all the Trophy times in World 5.
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| World 5 Master! | Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 5.
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| World 5 Novice! | Beat all levels in World 5.
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| You're the Boss now! | Beat a Boss Rush Mode!
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| You're the man...Slime?! | Beat all the achievements in Slime-san!
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