[STORY] Watched the opening.

Have mastered the Stomp technique

Achieved an S Rank with Sonic the Werehog for the first time

Find 30 treasures

Defeat 30 enemies with the Desert - 5

Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.

Defeat 20 enemies with the Pistole

Defeat 30 enemies with the Moss - 12

Find the Strange Relic

Get an 8X Multiplier

Complete a level with more than one player

Defeat 100 enemies with headshots