Sonic Adventure 2 Cosmic Wall walkthrough for Dr. Eggman's mission, including A Rank requirements and Protective Armor upgrade details.
A Rank Requirements:
- 1st Mission: 53000 points
- 2nd Mission: 1:30 time
- 3rd Mission: 1:30 time
- 4th Mission: 45000 points
- 5th Mission: 50000 points
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