Retro/Grade Achievements Here is the full list of all 21 Retro/Grade achievements.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 What are achievement flags? Click to find outApply AllWonNot wonPro Continuum CaptainGet a Continuum Captain rank or higher on all the levels in the Pro difficulty 16 May 2014 - Add a guidePro Astro AdmiralGet an Astro Admiral rank on all the levels in the Pro difficulty 16 May 2014 - Add a guideMediumcore Continuum CaptainGet a Continuum Captain rank or higher on all the levels in the Mediumcore difficulty 16 May 2014 - Add a guideMediumcore Astro AdmiralGet an Astro Admiral rank on all the levels in the Mediumcore difficulty 16 May 2014 - Add a guideCasual Continuum CaptainGet a Continuum Captain rank or higher on all the levels in the Casual difficulty 16 May 2014 - Add a guideCasual Astro AdmiralGet an Astro Admiral rank on all the levels in the Casual difficulty 16 May 2014 - Add a guideBeginner Continuum CaptainGet a Continuum Captain rank or higher on all the levels in the Beginner difficulty 16 May 2014 - Add a guideBeginner Astro AdmiralGet an Astro Admiral rank on all the levels in the Beginner difficulty 16 May 2014 - Add a guideChallenge Mode CompleteGet to the end of the challenge mode map 15 May 2014 - Add a guideAll Challenges CompletedComplete all the challenges in challenge mode 15 May 2014 - Add a guide50 Challenges CompletedComplete 50 challenges in challenge mode 04 January 2014 - Add a guideBeginner Campaign CompleteBeat the game on the Beginner difficulty or harder 03 January 2014 - Add a guideCasual Campaign CompleteBeat the game on the Casual difficulty or harder 03 January 2014 - Add a guideMediumcore Campaign CompleteBeat the game on the Mediumcore difficulty or harder 03 January 2014 - Add a guidePro Campaign CompleteBeat the game on the Pro difficulty or harder 03 January 2014 - Add a guideTough Campaign CompleteBeat the game on the Tough difficulty or harder 03 January 2014 - Add a guideX-TREME Campaign CompleteBeat the game on the X-TREME difficulty 03 January 2014 - Add a guideTough Continuum CaptainGet a Continuum Captain rank or higher on all the levels in the Tough difficulty Locked - Add a guideX-TREME Continuum CaptainGet a Continuum Captain rank or higher on all the levels in the X-TREME difficulty Locked - Add a guideTough Astro AdmiralGet an Astro Admiral rank on all the levels in the Tough difficulty Locked - Add a guideX-TREME Astro AdmiralGet an Astro Admiral rank on all the levels in the X-TREME difficulty Locked - Add a guide