Tunnel of Doom
10 Achievements
GOG
Fearless
Complete the tutorial
71.8%
How to unlock the Fearless achievement in Tunnel of Doom - Definitive Guide
Corrupt XBA
TrueAchievements
TrueAchievements
This forced tutorial at the beginning of the game should take no longer than 5-7 minutes. Just follow the simple instrutions to unlock this.