Here is the full list of all 128 GLASS2 achievements.
The base game contains 89 achievements, and there is 1 DLC pack containing 39 achievements.
Completing the Vivian Voices Collection
Complete the Vivian Gallery Collection
Complete the Katie Voices Collection
Complete the Katie Gallery Collection
Lena's Voice Collection Completed
Lena Gallery Collection Completed
Mia Voices Collection Completed
Mia Gallery Collection Completed
Completes the Maiden Collection
Enter the Maiden Collection
Launch the game for the first time
Clear the Tutorial Stage
Clear Stage 1-1
Touch the chest, buttocks, thigh, private area 50 times each
Play the game for(including time since launch and loading time) 1 hour
Play the game for(including time since launch and loading time) 2 hours
Play the game for(including time since launch and loading time) 5 hours
Clear stages 1 through 128 without skipping text (determines which story you need to complete)
No-touch completion of H-scenes (don't press anything and let the time run out)
Clear stages 1 through 128 with text skips, Press the Skip button to skip a story stage
Get x number of consecutive wins
Clear Chapter 1
Clear Chapter 4
Clear 7 Solitaire stages (It doesn't matter if you clear the same stage.)
Clear 108 stages (It doesn't matter if you clear the same stage.)
4 3-Star Stage Clears
16 3-Star Stage Clears
64 3-Star Stage Clears
Total number of Solitaire Stage Clear Stars: 48 (Cumulative Stars)
Vivian 3-Star All-Clear
Clear all stages with 3 stars (main story chapters 1-4)
Achieve 15 combos when clearing a stage
Complete 20 combos when clearing a stage
Abandon a stage once
Retry a stage once
Clear single stage with three stars to reach the Collect 1 Hidden poster
Clear 32 stages with three stars to reach the collection of 32 hidden posters.
Clear 64 stages with three stars to reach the Collect 64 Hidden posters
Accumulate 1000 Libido in Solitaire
Accumulate 10000 Libido in Solitaire
Accumulate 100000 Libido in Solitaire
Accumulate 1000000 Libido in Solitaire
Earn 5000 Libido by clearing a stage once
Earn 20000 Libido for clearing a stage once
Earn 50000 Libido for clearing a stage once
Use Undo 5 times cumulatively
Use Undo 20 times cumulatively
Use Undo 100 times cumulatively
Use a wild card 5 times cumulatively
Use a wild card 20 times cumulatively
Use Wildcard 100 times cumulatively
Play H-Scene 100 times
Play H-Scene 1000 times
50 touches in H play
500 touches in H play
5000 touches in H play
Touch the chest 50 times
Touch the chest 250 times
Touch the chest 500 times
Touch buttocks 50 times
Touch buttocks 250 times
Touch buttocks 500 times
Touch thigh 50 times
Touch thigh 250 times
Touch thigh 500 times
Touch private area 50 times
Touch private area 250 times
Touch private area 500 times
Touch the same tag 10 or more times (any tag) to clear 1 H-scene
Clear Vivian Chapters
Earn 24 stars in Vivian's Stage with Solitaire
Earn 48 stars in Vivian's stage with Solitaire
Clear the final stage of a chapter without using a rewind/wildcard
Clear the final stage of a Vivian chapter in under ** seconds
Clear Katie's Chapter
Earn 24 stars in KT's Stage with Solitaire
Earn 48 stars in KT's stage with Solitaire
Clear the final stage of a Katie chapter in under ** seconds
Clear Lena Chapters
Earn 24 stars in Lena's Stage with Solitaire
Earn 48 stars in Lena's stage with Solitaire
Clear the final stage of a Lena chapter in under ** seconds
Clear Mia Chapters
Earn 24 stars in Mia's Stage with Solitaire
Earn 48 stars in Mia's stage with Solitaire
Clear the final stage of a Mia chapter in under ** seconds
Completing the Lust Voices Collection
Complete the Lust Gallery Collection
Completing the Silphy Voices Collection
Complete the Silphy Gallery Collection
Completing the Yuki Voices Collection
Complete the Yuki Gallery Collection
Completing the Vaal Voices Collection
Complete the Vaal Gallery Collection
Watch the ending
Clear stages 65 through 128 without skipping text (determines which story you need to complete)
Clear stages 65 through 128 with text skips, Press the Skip button to skip a story stage
Complete 128 stages with 3 stars in Solitaire
Complete all stages in Chapters 5 through 8 with 3 stars.
Collect 128 Hidden Bromides
Lust became a colleague!
Solitaire wins 24 stars of Lust
48 stars for Lust in Solitaire
Clear the last stage of Lust without using wild cards and reversals, etc
Clear last solo stage of Lust within 180 seconds
Silphy became a colleague!
Solitaire Gets 24 Stars of Silphys
Solitaire Gets 48 Stars of Silphys
Clear the last stage of Silphy, without using wild cards and turnovers
Clear Silphy's last solitaire stage within 180 seconds
Yuki became a colleague!
Earn 24 stars for Yuki in Solitaire
48 stars for Yuki in Solitaire
Clear Yuki's last stage without using wild cards and reversals, etc
Clear Yuki's last solo stage within 180 seconds
Vaal became a colleague!
Solitaire Gets 24 Stars Of Vaal
48 stars for Vaal in Solitaire
Clear the final stage of the bar without using wild cards and reversals, etc
Clear the first boss battle solitaire stage with Vaal in less than 240 seconds
Clearing the second boss solo stage with Vaal in less than 240 seconds
3rd boss battle with Vaal. Solitaire Stage cleared within 240 seconds
Clearing the fourth boss battle solitaire stage with Vaal in less than 240 seconds
completely subdue Vaal