Sonic Generations Collection Achievements Here is the full list of all 49 Sonic Generations Collection achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.Filter Achievement View View Image viewList view Sort by Won first then by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc Flag Filter All None 39 Offline Mode 3 Online Mode 7 Online/Offline 49 Single Player 19 Main Storyline 9 Collectable 1 Cumulative + 6 Time/Date Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply AllWonNot wonCan't Touch ThisTook no damage while defeating the final boss. 12 November 2011 - 2 guidesTime AttackerPlayed Time Attack on all stages. 12 November 2011 - Add a guide(Hedge)Hogging It All Up!Got all collectibles. 11 November 2011 - Add a guideMission Accomplished!Cleared all the missions. 11 November 2011 - Add a guideMad SkillzGot all custom skills. 11 November 2011 - Add a guideBig BangGot Rank S in all acts. 11 November 2011 - Add a guideRed Ring CollectorGot all Red Star Rings. 11 November 2011 - Add a guideColor Power! 11 November 2011 - Add a guideA Quick Breather 10 November 2011 - 1 guideSecret Sleuth 09 November 2011 - Add a guideBlue CometGot Rank S in acts 12 times. 09 November 2011 - Add a guideWalk on WaterCleared CHEMICAL PLANT without entering the water. 08 November 2011 - 1 guideBonds of FriendshipCompleted all of Sonic's friends' Challenges. 08 November 2011 - Add a guideThe Byway or the Highway 07 November 2011 - 1 guideHalfway PointCleared half the missions. 07 November 2011 - Add a guideDemolition Derby 07 November 2011 - Add a guideGreased LightningCleared Green Hill within one minute. 07 November 2011 - 1 guideBlazing MeteorGot Rank S in acts seven times. 07 November 2011 - Add a guideWalk on Air 06 November 2011 - Add a guideWalkie TalkieChatted with all of Sonic's friends you saved. 06 November 2011 - Add a guideSupersonic! 05 November 2011 - Add a guideAll Stages Clear!Cleared Sonic Generations. 05 November 2011 - Add a guideTreasure Hunter 05 November 2011 - Add a guideBoom Boom Dragoon 05 November 2011 - Add a guideSilver Got Served 05 November 2011 - Add a guidePLANET WISP Restored! 05 November 2011 - Add a guideROOFTOP RUN Restored! 05 November 2011 - Add a guideCRISIS CITY Restored! 05 November 2011 - Add a guideLook Both Ways 05 November 2011 - Add a guideJoin the RanksJoined the rankings. 05 November 2011 - Add a guideA 30-Second TestParticipated in a 30 Second Trial. 05 November 2011 - Add a guidePerfect Punisher 05 November 2011 - Add a guideShadow Boxing 05 November 2011 - Add a guideTrickstarExecuted a trick with a seven-step combo or longer. 05 November 2011 - 1 guideSEASIDE HILL Restored! 05 November 2011 - Add a guideCITY ESCAPE Restored! 05 November 2011 - Add a guideJump for Joy!Found the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring. 05 November 2011 - Add a guideAction HeroPerformed all of Sonic's actions in Act 2. 05 November 2011 - Add a guideSPEED HIGHWAY Restored! 05 November 2011 - Add a guideSunny side up 05 November 2011 - Add a guideScrap Metal 05 November 2011 - Add a guideSKY SANCTUARY Restored! 05 November 2011 - Add a guideEradicatorDefeated 100 enemies. 05 November 2011 - Add a guideCHEMICAL PLANT Restored! 05 November 2011 - Add a guideShooting StarGot Rank S in acts three times. 05 November 2011 - Add a guideRing KingReached the goal without dropping any of the rings you collected in GREEN HILL Act 1. 05 November 2011 - Add a guideGREEN HILL Restored! 05 November 2011 - Add a guideBright StarGot Rank S in an act. 05 November 2011 - Add a guideThe Opening ActCompleted the first stage. 05 November 2011 - Add a guide