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 wonTime AttackerPlayed Time Attack on all stages. 04 March 2012 - Add a guideHalfway PointCleared half the missions. 03 March 2012 - Add a guideSilver Got Served 03 March 2012 - Add a guidePLANET WISP Restored! 03 March 2012 - Add a guideBig BangGot Rank S in all acts. 03 March 2012 - Add a guideCRISIS CITY Restored! 03 March 2012 - Add a guideROOFTOP RUN Restored! 03 March 2012 - Add a guideAction HeroPerformed all of Sonic's actions in Act 2. 03 March 2012 - Add a guidePerfect Punisher 03 March 2012 - Add a guideShadow Boxing 03 March 2012 - Add a guideSEASIDE HILL Restored! 03 March 2012 - Add a guideBlue CometGot Rank S in acts 12 times. 03 March 2012 - Add a guideCITY ESCAPE Restored! 03 March 2012 - Add a guideSPEED HIGHWAY Restored! 03 March 2012 - Add a guideBlazing MeteorGot Rank S in acts seven times. 03 March 2012 - Add a guideSunny side up 03 March 2012 - Add a guideJump for Joy!Found the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring. 03 March 2012 - Add a guideCan't Touch ThisTook no damage while defeating the final boss. 02 March 2012 - 2 guides(Hedge)Hogging It All Up!Got all collectibles. 02 March 2012 - Add a guideMad SkillzGot all custom skills. 02 March 2012 - Add a guideRed Ring CollectorGot all Red Star Rings. 02 March 2012 - Add a guideThe Byway or the Highway 02 March 2012 - 1 guideSecret Sleuth 02 March 2012 - Add a guideLook Both Ways 02 March 2012 - Add a guideA Quick Breather 02 March 2012 - 1 guideColor Power! 01 March 2012 - Add a guideWalk on WaterCleared CHEMICAL PLANT without entering the water. 26 February 2012 - 1 guideDemolition Derby 26 February 2012 - Add a guideWalkie TalkieChatted with all of Sonic's friends you saved. 26 February 2012 - Add a guideA 30-Second TestParticipated in a 30 Second Trial. 19 February 2012 - Add a guideSupersonic! 19 February 2012 - Add a guideBoom Boom Dragoon 11 February 2012 - Add a guideTreasure Hunter 11 February 2012 - Add a guideAll Stages Clear!Cleared Sonic Generations. 11 February 2012 - Add a guideBonds of FriendshipCompleted all of Sonic's friends' Challenges. 11 February 2012 - Add a guideMission Accomplished!Cleared all the missions. 11 February 2012 - Add a guideGreased LightningCleared Green Hill within one minute. 02 January 2012 - 1 guideJoin the RanksJoined the rankings. 02 January 2012 - Add a guideScrap Metal 02 January 2012 - Add a guideTrickstarExecuted a trick with a seven-step combo or longer. 02 January 2012 - 1 guideSKY SANCTUARY Restored! 02 January 2012 - Add a guideWalk on Air 02 January 2012 - Add a guideShooting StarGot Rank S in acts three times. 02 January 2012 - Add a guideEradicatorDefeated 100 enemies. 02 January 2012 - Add a guideCHEMICAL PLANT Restored! 02 January 2012 - Add a guideBright StarGot Rank S in an act. 30 December 2011 - Add a guideGREEN HILL Restored! 30 December 2011 - Add a guideRing KingReached the goal without dropping any of the rings you collected in GREEN HILL Act 1. 30 December 2011 - Add a guideThe Opening ActCompleted the first stage. 30 December 2011 - Add a guide