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. 07 May 2013 - 2 guidesTime AttackerPlayed Time Attack on all stages. 07 May 2013 - Add a guide(Hedge)Hogging It All Up!Got all collectibles. 26 November 2012 - Add a guideMad SkillzGot all custom skills. 26 November 2012 - Add a guideRed Ring CollectorGot all Red Star Rings. 26 November 2012 - Add a guideWalk on WaterCleared CHEMICAL PLANT without entering the water. 25 November 2012 - 1 guideGreased LightningCleared Green Hill within one minute. 25 November 2012 - 1 guideCHEMICAL PLANT Restored! 22 July 2012 - Add a guideBig BangGot Rank S in all acts. 03 January 2012 - Add a guideWalk on Air 03 January 2012 - Add a guideDemolition Derby 03 January 2012 - Add a guideSupersonic! 03 January 2012 - Add a guideThe Byway or the Highway 02 January 2012 - 1 guideJump for Joy!Found the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring. 02 January 2012 - Add a guideAll Stages Clear!Cleared Sonic Generations. 02 January 2012 - Add a guideTreasure Hunter 02 January 2012 - Add a guideBoom Boom Dragoon 02 January 2012 - Add a guideSilver Got Served 02 January 2012 - Add a guideMission Accomplished!Cleared all the missions. 02 January 2012 - Add a guideBonds of FriendshipCompleted all of Sonic's friends' Challenges. 02 January 2012 - Add a guideWalkie TalkieChatted with all of Sonic's friends you saved. 02 January 2012 - Add a guidePLANET WISP Restored! 02 January 2012 - Add a guideColor Power! 02 January 2012 - Add a guideROOFTOP RUN Restored! 02 January 2012 - Add a guideBlue CometGot Rank S in acts 12 times. 02 January 2012 - Add a guideA Quick Breather 02 January 2012 - 1 guideCRISIS CITY Restored! 31 December 2011 - Add a guideLook Both Ways 31 December 2011 - Add a guidePerfect Punisher 31 December 2011 - Add a guideShadow Boxing 31 December 2011 - Add a guideHalfway PointCleared half the missions. 31 December 2011 - Add a guideTrickstarExecuted a trick with a seven-step combo or longer. 31 December 2011 - 1 guideSEASIDE HILL Restored! 31 December 2011 - Add a guideAction HeroPerformed all of Sonic's actions in Act 2. 31 December 2011 - Add a guideSecret Sleuth 31 December 2011 - Add a guideCITY ESCAPE Restored! 28 December 2011 - Add a guideSPEED HIGHWAY Restored! 28 December 2011 - Add a guideBlazing MeteorGot Rank S in acts seven times. 28 December 2011 - Add a guideJoin the RanksJoined the rankings. 28 December 2011 - Add a guideA 30-Second TestParticipated in a 30 Second Trial. 28 December 2011 - Add a guideSunny side up 28 December 2011 - Add a guideScrap Metal 28 December 2011 - Add a guideEradicatorDefeated 100 enemies. 28 December 2011 - Add a guideSKY SANCTUARY Restored! 28 December 2011 - Add a guideGREEN HILL Restored! 28 December 2011 - Add a guideShooting StarGot Rank S in acts three times. 28 December 2011 - Add a guideBright StarGot Rank S in an act. 28 December 2011 - Add a guideThe Opening ActCompleted the first stage. 28 December 2011 - Add a guideRing KingReached the goal without dropping any of the rings you collected in GREEN HILL Act 1. 28 December 2011 - Add a guide