Here is the full list of all 12 The Mines of Morseph achievements.
Speak to five different benevolent spirits
Find your first hidden switch
Kill five enemies in battle
Kill twelve enemies in battle
Kill twenty enemies in battle
Read ten different books
Remove six obstacles using fire
Get through five code path stones
Collect 200 G.P.
Find seven Qi Potions
Defeat the source of evil in the mines
Find the mine key