Prologue: German Alps
Letter
You'll find the first letter right after climbing the ladder Wesley drops into the lab. Take a right to find it atop a table.
Jump to Section:
Prologue
Chapter 1: Prison
Chapter 2: Docks
Chapter 3: Wolfenstein Keep
Chapter 4: Escape!
Chapter 5: Wulfburg
Chapter 6: Ruins
Chapter 7: Old Town
Chapter 8: Dig Site