Here is the full list of all 69 DEEP SPACE WAIFU: NEKOMIMI achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
COMPLETE ONE HAND MODE NORIKO
SEE THE CREDITS!
YOU ENTERED GALLERY MODE
100% JENNY RAZORHEELS
100% TIFFANY RANCHO
PLAY WITH JOE
FIND THE ULTIMATE RIVAL
DEFEAT SENIOR PICKLES
100% DIGINEKO
SKIP ONE OF OUR COMICS STYLED CUTSCENES
DEFEAT UPGRADED CATRON
100% NORMAL LADY WHITESTROKE
DEFEAT DEADNIP
REACH STAR LEVEL 30
UNLOCK THE DIGINEKO
100% SHADOW MOON
DEFEAT PUMPKIN
UNLOCK JENNY RAZORHEELS
DEFEAT THE CUTIE GANG
REACH STAR LEVEL 20
100% HOMELESS CATS
UNLOCK HOMELESS CATS
DEFEAT THE FURBALL
100% MARY KATTY
REACH STAR LEVEL 15
UNLOCK MARY KATTY
DEFEAT THE CATRON BOSS
GET THE CATNIP SPECIAL
DESTROY THE X-NIP MINIBOSS
UNLOCK NORMAL LADY WHITESTROKE
UNLOCK TIFFANY RANCHO
DEFEAT THE PUFF
100% TABATHA WOLFANG
REACH STAR LEVEL 10
DEFEAT NEKO BELL
100% MIMI-CHAN
PLAY WITH LEISURE LION
DEFEATS CAT TOY
GET THE FURBALL SPECIAL
100% KUMA LUMA
PICK THE GUN POWER UP
YOU DIED IN A DATE
PICK THE MISSILE POWER UP
PICK THE SHIELD POWER UP
PLAY WITH BEAR KING
UNLOCK KUMA LUMA
GET A PERFECT 5 HEARTS SCORE
UNLOCK SHADOW MOON
TAKE A PICTURE OF A LOST NEKO
DEFEAT THE CATNIP BOSS
100% DOUBLE NEKOS
DESTROY THE MOTHERNIP MINIBOSS
PICK THE LASER POWER UP
PICK THE RAY POWER UP
EXPLODE A PIECE OF CLOTH
PLAY WITH FOXXXY
HAVE YOUR FIRST DATE
PRESS START
UNLOCK TABATHA WOLFANG
COMPLETE ONE HAND MODE NEKOS
COMPLETE ONE HAND MODE SHADOW
COMPLETE ONE HAND MODE KUMA
COMPLETE ONE HAND MODE TABATHA
COMPLETE ONE HAND TIFFANY
COMPLETE ONE HAND LADY
COMPLETE ONE HAND MARY
COMPLETE ONE HAND HOMELESS CATS
COMPLETE ONE HAND JENNY
COMPLETE ONE HAND DIGINEKO