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. 25 January 2013 - Add a guide(Hedge)Hogging It All Up!Got all collectibles. 25 January 2013 - Add a guideMission Accomplished!Cleared all the missions. 25 January 2013 - Add a guideBonds of FriendshipCompleted all of Sonic's friends' Challenges. 25 January 2013 - Add a guideMad SkillzGot all custom skills. 25 January 2013 - Add a guideHalfway PointCleared half the missions. 24 January 2013 - Add a guideCan't Touch ThisTook no damage while defeating the final boss. 24 January 2013 - 2 guidesRed Ring CollectorGot all Red Star Rings. 23 January 2013 - Add a guideBig BangGot Rank S in all acts. 23 January 2013 - Add a guideColor Power! 23 January 2013 - Add a guideA Quick Breather 23 January 2013 - 1 guideLook Both Ways 23 January 2013 - Add a guideSecret Sleuth 23 January 2013 - Add a guideBlue CometGot Rank S in acts 12 times. 23 January 2013 - Add a guideThe Byway or the Highway 23 January 2013 - 1 guideSupersonic! 22 January 2013 - Add a guideJump for Joy!Found the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring. 22 January 2013 - Add a guideBlazing MeteorGot Rank S in acts seven times. 22 January 2013 - Add a guideWalk on WaterCleared CHEMICAL PLANT without entering the water. 22 January 2013 - 1 guideWalk on Air 20 January 2013 - Add a guideDemolition Derby 19 January 2013 - Add a guideWalkie TalkieChatted with all of Sonic's friends you saved. 19 January 2013 - Add a guideAll Stages Clear!Cleared Sonic Generations. 19 January 2013 - Add a guideTreasure Hunter 19 January 2013 - Add a guideBoom Boom Dragoon 19 January 2013 - Add a guideSilver Got Served 19 January 2013 - Add a guidePLANET WISP Restored! 18 January 2013 - Add a guideROOFTOP RUN Restored! 18 January 2013 - Add a guideShooting StarGot Rank S in acts three times. 18 January 2013 - Add a guideCRISIS CITY Restored! 18 January 2013 - Add a guidePerfect Punisher 06 January 2013 - Add a guideTrickstarExecuted a trick with a seven-step combo or longer. 06 January 2013 - 1 guideShadow Boxing 06 January 2013 - Add a guideSEASIDE HILL Restored! 06 January 2013 - Add a guideAction HeroPerformed all of Sonic's actions in Act 2. 06 January 2013 - Add a guideA 30-Second TestParticipated in a 30 Second Trial. 06 January 2013 - Add a guideJoin the RanksJoined the rankings. 06 January 2013 - Add a guideCITY ESCAPE Restored! 05 January 2013 - Add a guideSPEED HIGHWAY Restored! 05 January 2013 - Add a guideGreased LightningCleared Green Hill within one minute. 05 January 2013 - 1 guideSunny side up 05 January 2013 - Add a guideRing KingReached the goal without dropping any of the rings you collected in GREEN HILL Act 1. 04 January 2013 - Add a guideScrap Metal 04 January 2013 - Add a guideSKY SANCTUARY Restored! 04 January 2013 - Add a guideEradicatorDefeated 100 enemies. 04 January 2013 - Add a guideCHEMICAL PLANT Restored! 04 January 2013 - Add a guideGREEN HILL Restored! 04 January 2013 - Add a guideBright StarGot Rank S in an act. 04 January 2013 - Add a guideThe Opening ActCompleted the first stage. 04 January 2013 - Add a guide