If the boss is defeated, both players will go on to the next board.

After the boss is defeated, the player will continue to the next level.

At the end of each stage, a boss must be defeated.

At the end of each level a boss must be defeated before the player can progress any further.

At the end of the fifth level, a boss must be defeated in order to continue the game.

Each story can only be reached by defeating the first boss.

After the boss is defeated, the player has to quickly fight their way back to the beginning of the level before a bomb goes off.

The boss must be defeated to access the exit of the level.

Once the boss is defeated, the player travels forward in time and to the next level.

By defeating the boss, the next chamber will become available for play.