Full list of all 48 Sonic Forces achievements worth 1,085 gamerscore. It takes around 25-30 hours to unlock all of the achievements in the base game.
The base game contains 45 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 3 achievements worth 85 Gamerscore.
Completed 3 Daily Missions.
Made it into the rankings.
Restored peace to the world.
Defeated Infinite.
Turned the tide of the conflict.
Defeated 1,000 enemies.
Drove off Infinite again.
Collected 100 parts.
Liberated a world.
Collected 30 parts.
Drove off Eggman.
Drove off Infinite.
Defeated Zavok.
Created an Avatar.
Cleared Stage 1.
Cleared all Secret Stages.
Cleared all EX Stages.
Collected all Red Star Rings.
Collected 3 Number Rings.
Collected all Number Rings.
Collected Silver Moon Rings three times.
Collected all Silver Moon Rings.
Collected a total of 10,000 Rings.(All Rings held at the end of the stage will be counted.)
Collected a total of 50,000 Rings.(All Rings held at the end of the stage will be counted.)
Collected a total of 100,000 Rings.(All Rings held at the end of the stage will be counted.)
Defeated 5,000 enemies.
Defeated 10,000 enemies.
Changed Wispons for the first time.
Equipped a part in every slot.
Used the Closet.
Achieved a soldier's highest honor.
Achieved highest honors with all races.
Utilized the Rental Avatar function.
Created your second Avatar.
Collected 10 Wispons.
Collected 30 Wispons.
Collected all Wispons.
Collected 500 parts.
Collected all parts.
Completed 5 Daily Missions.
Completed 10 Daily Missions.
Completed your first SOS Mission.
Completed 5 SOS Missions.
Completed 10 SOS Missions.
Completed all Challenge Missions.
Collected all Red Star Rings in Episode Shadow.
Collected all Number Rings in Episode Shadow.
Collected all Silver Moon Rings in Episode Shadow.