Sonic & Knuckles Achievements Full list of all 12 Sonic & Knuckles achievements worth 200 gamerscore. It takes around 4-5 hours to unlock all of the achievements on Xbox 360.Filter Achievement View View Image viewList view Sort by TrueAchievement desc TrueAchievement asc Achievement name desc Achievement name asc GamerScore desc GamerScore asc TA Ratio desc TA Ratio asc Gamers desc Gamers asc Xbox.com order Date won desc Date won asc Flag Filter All None 12 Offline Mode 12 Single Player 4 Main Storyline 2 Story Completed 2 Collectable 1 Missable Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply Sonic FinaleComplete the game as Sonic. 2 guidesKnuckles FinaleComplete the game as Knuckles. 2 guidesHide adsPlease ContinueEarn a Continue in either a Bonus or Special Stage. 3 guidesGettin' SuperCollect all seven Chaos Emeralds. 6 guidesChaos EmeraldCollect a Chaos Emerald. 2 guidesHot FeetFinish the Lava Reef Zone. 3 guidesDesert RunnerFinish the Sandopolis Zone. 3 guidesGrease MonkeyFinish the Flying Battery Zone. 2 guidesFun GuyFinish the Mushroom Hill Zone. 2 guidesExtra HedgehogCollect 100 rings. 2 guides Two SidedStart the game once as each character. 2 guidesExtra! Extra!Enter a Bonus or Special Stage. 3 guides