Heroes of Might and Magic III: The Shadow of Death/Elixir of Life

Summary
Gelu has spent many months training to become a member of Erathia's Forest Guard. For his final test, he is tasked to assemble an artifact known as the Elixir of Life. He must find the artifact's four components to keep it out of the hands of the Necromancers. (taken from game itself)

Scenarios
Graduation exercise Win condition: defeat all enemies Loss condition: Gelu is defeated in combat

Cutthroats Win condition: acquire Ring of Vitality Loss condition: Gelu is defeated in battle

Valley of the Dragon Lords Win condition: acquire Ring of Life and defeat all enemies Loss condition: Gelu is defeated in combat

A Thief in the Night Win condition: acquire Vial of Lifeblood form Vampire Lord Vokial Loss condition: Gelu is defeated in battle