Ok, stop posting links to other game sites here and on other games on Kongregate. It's getting annoying.
Ontopic - I can't wait for the 3rd one! (if there is gonna be one!) =D
To get the 4th trilobite key:
Don't kill Gope in the Gem Mines and after beating Muriance, go to the inn in Goznor and talk to the bandit there and he will give you the key.
 "Sonny 2"){kind=icon}
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