Here is the full list of all 11 眼球大師 Eyeball Master achievements.
Clear Normal Difficulty
Clear Difficulty
Nightmare Clearance
Equipped Nightmare with Gambler
在命中率為0的情況下通關任意難度
Clear Nightmare difficulty without equipping any weapons
Equipped with spirits to clear the nightmare
Complete the game ending
Pray to the Goddess 3 times
Have 6 potions in China
Craft 20 weapons