Sonic Adventure 2: All Tails & Eggman Levels

So why do people have a hard time with these levels? 0:00 Introduction 0:04 Prison Lane 3:43 Stage: 07 Mission Street 8:07 Hidden Base 12:18 Eternal Engine 18:38 Route 101 21:51 Iron Gate 24:26 Sand Ocean 28:03 Lost Colony 32:34 Stage: 07 Weapons Bed 36:03 Cosmic Wall