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 won(Hedge)Hogging It All Up!Got all collectibles. 13 February 2012 - Add a guideMission Accomplished!Cleared all the missions. 13 February 2012 - Add a guideMad SkillzGot all custom skills. 13 February 2012 - Add a guideHalfway PointCleared half the missions. 29 January 2012 - Add a guideTime AttackerPlayed Time Attack on all stages. 27 January 2012 - Add a guideCan't Touch ThisTook no damage while defeating the final boss. 23 January 2012 - 2 guidesColor Power! 23 January 2012 - Add a guideRed Ring CollectorGot all Red Star Rings. 23 January 2012 - Add a guideBig BangGot Rank S in all acts. 23 January 2012 - Add a guideA Quick Breather 23 January 2012 - 1 guideLook Both Ways 23 January 2012 - Add a guideBonds of FriendshipCompleted all of Sonic's friends' Challenges. 22 January 2012 - Add a guideSecret Sleuth 21 January 2012 - Add a guideDemolition Derby 20 January 2012 - Add a guideBlue CometGot Rank S in acts 12 times. 20 January 2012 - Add a guideThe Byway or the Highway 18 January 2012 - 1 guideSupersonic! 05 January 2012 - Add a guideWalkie TalkieChatted with all of Sonic's friends you saved. 05 January 2012 - Add a guideAll Stages Clear!Cleared Sonic Generations. 05 January 2012 - Add a guideTreasure Hunter 05 January 2012 - Add a guideBoom Boom Dragoon 05 January 2012 - Add a guideSilver Got Served 05 January 2012 - Add a guidePLANET WISP Restored! 05 January 2012 - Add a guideROOFTOP RUN Restored! 05 January 2012 - Add a guideCRISIS CITY Restored! 05 January 2012 - Add a guidePerfect Punisher 01 January 2012 - Add a guideShadow Boxing 01 January 2012 - Add a guideSEASIDE HILL Restored! 01 January 2012 - Add a guideCITY ESCAPE Restored! 01 January 2012 - Add a guideSPEED HIGHWAY Restored! 01 January 2012 - Add a guideBlazing MeteorGot Rank S in acts seven times. 01 January 2012 - Add a guideAction HeroPerformed all of Sonic's actions in Act 2. 01 January 2012 - Add a guideA 30-Second TestParticipated in a 30 Second Trial. 01 January 2012 - Add a guideJoin the RanksJoined the rankings. 01 January 2012 - Add a guideSunny side up 01 January 2012 - Add a guideWalk on Air 01 January 2012 - Add a guideScrap Metal 01 January 2012 - Add a guideSKY SANCTUARY Restored! 01 January 2012 - Add a guideWalk on WaterCleared CHEMICAL PLANT without entering the water. 30 December 2011 - 1 guideGreased LightningCleared Green Hill within one minute. 29 December 2011 - 1 guideCHEMICAL PLANT Restored! 29 December 2011 - Add a guideTrickstarExecuted a trick with a seven-step combo or longer. 29 December 2011 - 1 guideJump for Joy!Found the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring. 29 December 2011 - Add a guideShooting StarGot Rank S in acts three times. 29 December 2011 - Add a guideEradicatorDefeated 100 enemies. 29 December 2011 - Add a guideGREEN HILL Restored! 27 December 2011 - Add a guideBright StarGot Rank S in an act. 27 December 2011 - Add a guideThe Opening ActCompleted the first stage. 27 December 2011 - Add a guideRing KingReached the goal without dropping any of the rings you collected in GREEN HILL Act 1. 27 December 2011 - Add a guide