Here is the full list of all 17 Sigi - there are A Fart for Melusina achievements.
Clear all caves.
In under 30 minutes?
Hard to find and almost out of reach.
Collect all SIGI's.
Find the long lost golden crown.
Pocket 2500 coins.
Find the long lost golden talisman.
Find the long lost golden grail.
There she goes again.
Defeat Ivan Stinkup.
An apple a day...
Defeat Kolles Terrol.
Defeat the Steel Horse.
Collect 1000 coins.
Kill 100 Zombies.
Defeat Blind John
Fart at Melusina.