Sonic Adventure

Sonic Adventure

15 Achievements

250

26-33h

Xbox 360
Xbox One
Xbox Series
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E-102 "γ"

E-102 "γ"

E-102 is your friend now.

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How to unlock the E-102 "γ" achievement in Sonic Adventure - Definitive Guide

Well There are 5 meathods but here are some that I know of:
Sonic and/Or Tails: Defeat E-102 Gamma after completing Sky deck
Knuckles: Return from the past a second time after completing stage 4
Amy: Complete Twinkle Park Get capured by Zero and be freed By E-102 Gamma (those last two things are in 2 cutscenes)
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19 Jul 2011 03:44

With Sonic or Tails, you will meet E-102 "Gamma" after the Sky Deck level.

Just fight against him, then, he'll be a selectable character. Achievement unlocked.

You can also meet Gamma with Amy, but it's a bit faster to do this achievement during your Sonic's playthrough
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15 Sep 2010 20:08

Story-related, cannot be missed.
See Super Sonic for a detailed walkthrough of the game.

After you complete the Sky Deck action stage, you will encounter E-102 on the Egg Carrier. You will have to fight him. After you defeat him, the trophy will pop during the ensuing cutscene. At this point you can quit the Sonic story and play E-102’s story, if you like.

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