Here's all the locations of the upgrades:.
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Sonic:.
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Light speed shoes-In the sewer by the burger shop..
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Crystal ring-In the hotel door above the manager behind the counter (Hold B in front of the door)..
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Ancient light-On a rock to the left of Red Mountain..
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Tails:.
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Jet anklet-In the sewer behind Twinkle Park..
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Rhythm badge-When you enter the past turn left and go up the stairs and turn right..
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Knuckles:.
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Shovel claw-Beside Kiki the monkey in a cave by the hillside of Tails workshop..
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Fighting gloves-On a ledge above big the cat's house..
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Amy:.
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Warrier feather-Beat Robotnik's high score on whack-a-sonic..
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Long hammer-Beat your new score twice..
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Big The Cat:.
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lures-.
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1)In the ice cap level..
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2)In a cell onboard the egg carrier..
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3)In a sewer behind Twinkle Park..
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4)In a cave in the Aztec Forest..
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Life Belt-Turn to the left when you walk through the altar to Ice Cap..
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Power Rod-Lift up Big's bed and jump in..
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E-102:.
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Jet booster-In the ammunition room on the egg carrier..
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Battle gun-On the opposite side of the ammunition room..
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