Here is the full list of all 30 Borderus: Angels & Demons achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Beat record time on level 1 for 2 stars.
Beat record time on level 2 for 2 stars.
Beat record time on level 3 for 2 stars.
Beat record time on level 4 for 2 stars.
Beat record time on level 5 for 2 stars.
Beat record time on level 6 for 2 stars.
Beat record time on level 7 for 2 stars.
Beat record time on level 8 for 2 stars.
Beat record time on level 9 for 2 stars.
Beat record time on level 10 for 2 stars.
Beat record time on level 11 for 2 stars.
Beat record time on level 12 for 2 stars.
Beat record time on level 13 for 2 stars.
Beat record time on level 14 for 2 stars.
Beat record time on level 15 for 2 stars.
Beat record time on level 1 for 3 stars.
Beat record time on level 2 for 3 stars.
Beat record time on level 3 for 3 stars.
Beat record time on level 4 for 3 stars.
Beat record time on level 5 for 3 stars.
Beat record time on level 6 for 3 stars.
Beat record time on level 7 for 3 stars.
Beat record time on level 8 for 3 stars.
Beat record time on level 9 for 3 stars.
Beat record time on level 10 for 3 stars.
Beat record time on level 11 for 3 stars.
Beat record time on level 12 for 3 stars.
Beat record time on level 13 for 3 stars.
Beat record time on level 14 for 3 stars.
Beat record time on level 15 for 3 stars.