Here is the full list of all 100 Hentai Mosaique Neko Waifus achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
FINISH ALL PUZZLES WITH JIYA
CLICK THE PUZZLE PIECES 3000 TIMES
LEVEL UP TO LEVEL 100
SOLVE 40 PUZZLES
LEVEL UP "AIRSTRIKE OF LOVE" TO LEVEL 20
FINISH ALL PUZZLES WITH SAYOURI AND KUMI
FIRE RAIN OF LOVE 100 TIMES
ALL GIRLS UNDRESSED AT LEAST TO THEIR UNDERWARE
FIRE SONAR OF LOVE 50 TIMES
SOLVE 35 PUZZLES
VIEW 100 IMAGES IN THE GALLERY
SOLVE 30 PUZZLES
LEVEL UP TO LEVEL 75
CLICK THE PUZZLE PIECES 2000 TIMES
USE PEEK ABILITY 20 TIMES
LEVEL UP "EARTHQUAKE" TO LEVEL 10
USE PEEK ABILITY 15 TIMES
FIRE AIRSTRIKE OF LOVE 25 TIMES
FIRE EARTHQUAKE 10 TIMES
LEVEL UP "EARTHQUAKE" TO LEVEL 5
LEVEL UP "PEEK" TO LEVEL 10
LEVEL UP "PEEK" TO LEVEL 5
GATHER 10 UNSPENT ABILITY POINTS
PUNCH OF LOVE FIRED 100 TIMES
GATHER 7 UNSPENT ABILITY POINTS
GATHER 5 UNSPENT ABILITY POINTS
LEVEL UP TO LEVEL 50
CLICK THE PUZZLE PIECES 1500 TIMES
LEVEL UP "PUNCH OF LOVE" TO LEVEL 10
SOLVE 25 PUZZLES
USE PEEK ABILITY 10 TIMES
FIRE RAIN OF LOVE 50 TIMES
FIRE SONAR OF LOVE 25 TIMES
LEVEL UP "LOVE RAIN" TO LEVEL 10
LEVEL UP "SONAR OF LOVE" TO LEVEL 10
LEVEL UP "AIRSTRIKE OF LOVE" TO LEVEL 10
SOLVE 666 BLOCKS
FINISH ALL PUZZLES WITH SAYOURI
CLICK THE PUZZLE PIECES 1000 TIMES
SOLVE 20 PUZZLES
CLICK THE PUZZLE PIECES 900 TIMES
GET 5000 EXPERIENCE
FIRE AIRSTRIKE OF LOVE 10 TIMES
PUNCH OF LOVE FIRED 50 TIMES
CLICK THE PUZZLE PIECES 800 TIMES
LEVEL UP TO LEVEL 25
CLICK THE PUZZLE PIECES 700 TIMES
LEVEL UP "EARTHQUAKE" TO LEVEL 1
100 BLOCKS UNCOVERED BY RAIN OF LOVE
FIRE SONAR OF LOVE 10 TIMES
LEVEL UP "AIRSTRIKE OF LOVE" TO LEVEL 5
SOLVE 15 PUZZLES
GET 3000 EXPERIENCE
USE PEEK ABILITY TWICE
CLICK THE PUZZLE PIECES 600 TIMES
USE PEEK ABILITY ONCE
LEVEL UP TO LEVEL 150
CLICK THE PUZZLE PIECES 500 TIMES
LEVEL UP "LOVE RADAR" TO LEVEL 5
LEVEL UP "AIRSTRIKE OF LOVE" TO LEVEL 1
SOLVE 10 PUZZLES
FINISH ALL PUZZLES WITH KUMI
50 BLOCKS UNCOVERED BY RAIN OF LOVE
CLICK THE PUZZLE PIECES 400 TIMES
FIRE RAIN OF LOVE 10 TIMES
LEVEL UP TO LEVEL 15
CLICK THE PUZZLE PIECES 300 TIMES
VIEW 10 IMAGES IN THE GALLERY
VIEW YOUR FIRST IMAGE IN THE GALLERY
LEVEL UP "RAIN OF LOVE" TO LEVEL 5
LEVEL UP "SONAR OF LOVE" TO LEVEL 1
GET 1000 EXPERIENCE
10 BLOCKS UNCOVERED BY RAIN OF LOVE
CLICK THE PUZZLE PIECES 200 TIMES
PUNCH OF LOVE FIRED 10 TIMES
SOLVE 5 PUZZLES
DISCOVER A MULTI PHONE PUZZLE
LEVEL UP TO LEVEL 10
CLICK THE PUZZLE PIECES 100 TIMES
LEVEL UP "RAIN OF LOVE " TO LEVEL 1
LEVEL UP "PUNCH OF LOVE" TO LEVEL 5
SOLVE 2 PUZZLES
CLICK THE PUZZLE PIECES 50 TIMES
LEVEL UP TO LEVEL 5
LEVEL UP "PUNCH OF LOVE" TO LEVEL 1
SOLVE 1 PUZZLE
GATHER 2 UNSPENT ABILITY POINTS
LEVEL UP "PEEK" TO LEVEL 1
CLICK THE PUZZLE PIECES 10 TIMES
CLICK THE PUZZLE PIECES FOR THE FIRST TIME
HI THERE
SOLVE 2000 BLOCKS IN TOTAL
GATHER 13 UNSPENT ABILITY POINTS
GATHER 15 UNSPENT ABILITY POINTS
USE PEEK ABILITY 50 TIMES
VIEW 1000 IMAGES IN THE GALLERY
FIRE AIRSTRIKE OF LOVE 50 TIMES
FIRE EARTHQUAKE 50 TIMES
FIRE EARTHQUAKE 25 TIMES
1000 BLOCKS UNCOVERED BY RAIN OF LOVE