Here is the full list of all 28 Horoscopicus achievements.
Completed the Capricorn Stage!
Completed the Taurus Stage!
Completed the Virgo Stage!
Completed the Aquarius Stage!
Completed the Gemini Stage!
Completed the Libra Stage!
Completed the Pisces Stage!
Completed the Cancer Stage!
Completed the Scorpio Stage!
Completed the Aries Stage!
Completed the Leo Stage!
Completed the Sagittarius Stage!
Finished the game! Thanks for playing!
Finished the game with all the pets found!
Found and pet the hidden Cat!
Found and pet the hidden Bear!
Found and pet the hidden Dog!
Found and pet the hidden Conure!
Found and pet the hidden Cockatiel!
Found and pet the hidden Toucan!
Found and pet the hidden Axolotl!
Found and pet the hidden Turtle!
Found and pet the hidden Seal!
Found and pet the hidden Alpaca!
Found and pet the hidden Lizard!
Found and pet the hidden Tortoise!
Finished the game without Dying!
Finished the game without Dying and Found all the Pets!