Here's a guide for getting every collectable in Episode Shadow
0:00 - Enemy Territory (Red Rings)
1:53 - Enemy Territory (Number Rings)
2:19 - Enemy Territory (Silver Moon Rings)
2:33 - Eggman's Facility (Red Rings)
4:26 - Eggman's Facility (Number Rings)
4:48 - Eggman's Facility (Silver Moon Rings)
5:19 - Virtual Reality (Red Rings - Chaos Spear! Achievement/Trophy)
8:24 - Virtual Reality (Number Rings - Chaos Blast! Achievement/Trophy)
9:49 - Virtual Reality (Silver Moon Rings - Chaos Control! Achievement/Trophy)