Solo
Leader 1: Hell of the North has no solo mode.
This game has no solo mode: the rules are for 2 or more players, each running a team.
Players on BoardGameGeek have written solitaire and automated-team rules for the Leader 1 series; they are fan material, not part of the game. Look for them on the Leader 1: Hell of the North files page and the Leader 1 files page.