Here is the full list of all 69 GACHIMUCHI Arcade: Lustful Boys achievements.
You have completed all levels
You have completed the first level of the snake
You have completed the second level of the snake
You have completed the third level of the snake
You have completed the fourth level of the snake
You have completed the fifth level of the snake
You have completed the sixth level of the snake
You have completed the first level of the arkanoid
You have completed the second level of the arkanoid
You have completed the third level of the arkanoid
You have completed the fourth level of the arkanoid
You have completed the fifth level of the arkanoid
You have completed the sixth level of the arkanoid
You have completed the first level of the pong
You have completed the second level of the pong
You have completed the third level of the pong
You have completed the fourth level of the pong
You have completed the fifth level of the pong
You have completed the sixth level of the pong
You have completed the first level of the xonix
You have completed the second level of the xonix
You have completed the third level of the xonix
You have completed the fourth level of the xonix
You have completed the fifth level of the xonix
You have completed the sixth level of the xonix
You have completed the first level of the puzzle
You have completed the second level of the puzzle
You have completed the third level of the puzzle
You have completed the fourth level of the puzzle
You have completed the fifth level of the puzzle
You have completed the sixth level of the puzzle
You have completed Xonix mode
You have completed Snake mode
You have completed Puzzle mode
You have completed Pong mode
You have completed Arkanoid mode
Enter the credits of the game for the first time
Enter the gallery for the first time
You were able to wait until the end of the credits.
Press the back button
Changing the language of the game
Click on a special place
Click on Billy
Exit the game
Lose for the first time
Win for the first time
Click on the guide button
Click on the play button
See the loading screen for the first time
Really
Click on the restart button
♂ Dancin' when I think of you ♂
♂♂♂
Can not hear anything
That's good
Click on the neon title
Welcome to the game
Collect your first apple in a snake mode