There are a total of four endings in "Iron Nest Heavy Artillery," and none of them are particularly difficult to achieve. First is Ending 1, Peaceful Return. To achieve it, simply fire propaganda leaflet shells into the city. The congratulatory telegram is sent by the King. The monarchists only wish to maintain peace and unity in Spain and are unconcerned with external conflicts, so peacefully retaking Barcelona holds great significance for them.
How to Achieve All Endings in Iron Nest Heavy Artillery
It's quite interesting that the four endings correspond to the attitudes of four different factions.
Ending 1: The congratulatory telegram is sent by the King. The monarchists only wish to maintain peace and unity in Spain and are unconcerned with external conflicts, so peacefully retaking Barcelona holds great significance for them.
Ending 2: The congratulatory telegram is sent by the Supreme Command. Although the Iron Nest efficiently completed its mission, eliminating the need for further combat, neither the General nor the King is satisfied with the outcome. As a result, only the staff officers at the Supreme Command send you a formalized message of thanks.
Ending 3: There is no congratulatory telegram, as the Iron Nest operator single-handedly wiped out everyone. Spain's future is led by a new regime, while the fate of the operator remains unknown.
Ending 4: The congratulatory telegram is personally sent by the General himself. The extraordinary power of the nuclear shells greatly boosts the confidence of the militarists, who immediately decide to march north and join the world war in Europe. The monarchists express their disagreement through various channels, but to no avail. Under the General's leadership, Spain is bound to conquer the entire world in a single day.