No missable achievements (plus 22 unknown)
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Ghost?
Beat the 1st boss
Beat the 2nd boss
Spill 1000 liters of blood
Found the Major
Beat the 3th boss
2 hours in the dungeons
Beat the 4th boss
Beat the 5th boss
Beat the 6th boss
Found the Hunter
Beat the 7th boss
Beat the 8th boss
5 hours in the dungeons
Beat the 9th boss
Used a cheat code
Beat the Devil
Found the Dragon
Collect 10.000 gold
10 hours in the dungeons
Found all the hidden books
Die 100 times