The adventure “Troll Shield” is available at DriveThruRPG
Troll Shield is based on the Era of Darkness Add-on, which is integrated in the Insight RPG System Core Rulebook. All rules, weapons, creatures etc. that are not explained in this adventure book can be found in the Insight RPG Core Rulebook.
Join the Troll Shield Guild and fight the trolls for gold and glory.
Insight RPG System Adventures are more about problem solving and reasoning, rather than the standard hack-and-slash solution.