Here is the full list of all 15 Once Bitten, Twice Dead! achievements.
Developer's bones found! Well Done!
You have achieved the highest point! For Now..
You found the lord, well a church.
You found the Chopper!
You have found the boat!
You have found an Island.
You are very nosey, searching high and low.
You have entered a town
You found bard, oh no!
Walking in the woods
Found Wale bones
Discovered a Row Boat, behind a house.
Run, Run, Jump and Miss.