How to get all the Achievements to unlock all the options:
* Neck Accessories: Open the Game for the first time.
* Fox Masks: Read the in-game instructions until the end.
* Scars: Use Ctrl+Z or Reset several times.
* Decoration: Use the Random button several times.
* Head accessories: Open the game for the second time.
* Leg Accessories: Open the game for the third or fourth time.
* Fox Fire: Use the game the next day.
* Wings: Unlocked after you have obtained all the other Achievements.