Campaign

The main story mode. Progress through chapters and stages to unlock features, heroes, and resources. Each chapter spans multiple stages and can be replayed at higher difficulties once cleared.

Sub-Modes

Normal

The base difficulty. Clear all stages to unlock Hard mode and progress through the main story.

Hard

Unlocked after clearing Normal. Enemies are stronger and rewards are better.

Nightmare

The hardest Campaign difficulty. Requires a well-developed roster and grants the best Campaign rewards.

Tips & Strategy

Clear Normal first to unlock the full game. Hard and Nightmare use the same maps but significantly stronger enemies — over-levelling your heroes before progressing saves stamina in the long run.