You all win the game when you kill the Elder One by defeating its Final Stage.
If multiple end-game triggers happen at the same time, winning conditions have precedence.
EXAMPLE: The Elder One and the last investigator die at the same time. The players saved the world and win the game.
You all lose the game when one of the following happens:
- An investigator is killed or consumed by madness before the Elder One is summoned to the board (Stage 1 card).
- All investigators are killed or consumed by madness after the Elder One is summoned (Stages 2 onward).
- The Progression token reaches the last (8th) space of the Summoning track.