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