Campaign Missions

Campaign missions are single-player battles that the player can fight in with energy. Campaign missions are separated into different "chapters," each guarded by an AI character and get progressively more difficult the deeper the player traverses. Each chapter consists of 7-10 missions, most commonly 10. Completing a mission grants scrap and campaign key fragments needed to open campaign chests.

Upon reaching specific points in a chapter, usually around the middle of the chapter and the last mission, more rewards are given out upon completion, including a piece of tech. In the case of the last mission, a unit or gold is awarded as well. These special missions require double the energy than usual and may include extreme weather. When completing the midpoint mission, it will appear as a warzone mission, allowing players to fight again for scrap and campaign key fragments. Warzone tickets from raid league daily rewards can then be used at this point if the player wishes to do so, spending 1 ticket and the appropriate amount of energy to skip the battle and collect the rewards immediately.

When the player finishes a chapter, they gain access to the chapter's tough mode if they finished the previous chapter in tough mode. Tough mode missions feature stronger units than those in normal mode, appearing as either promoted versions or replaced with higher natural rank units or even a combination of both along with better tech equipped and higher upgraded abilities. Missions played on tough mode also feature better rewards than normal at the same energy cost. If the player can defeat the harder missions, the chapter's expert mode unlocks if the previous chapter has been completed in expert mode which again, has stronger enemies and better rewards.

Once expert mode has been conquered, the chapter's epic mode unlocks. This mode can be fairly difficult with extreme weather being present practically for half of the chapter and the enemy squad starting off with units promoted to 6 stars in the very first mission. Additionally, the enemy will utilize one of three different defense tower layouts. The first possible layout is having 5 of the same deploy cost-reducing towers such as garrisons, providing a whopping 52.5% reduction in deploy costs for a certain unit type and can make it easily spammable depending on the base cost of the units themselves. The second possible layout is using 5 satellite links, allowing the enemy to have a large head start in deploy credits at the start to potentially rush the player with many units immediately at the beginning of the battle. The third possible layout is using 4 of the same defense tower that is able to attack, such as cannon towers. While this does not disable a certain unit type, it effectively discourages squads that are heavily reliant on a certain unit type as they will take heavy damage upon approaching the enemy base on top of the damage sustained from fighting enemy units. In return, the midpoint missions for epic difficulty grants unit parts currently not found anywhere else. Specifically, they are unit parts for a whitehawk Gungnir, a goldfire Oni, and a redpoint Hivegunner.

At the start and end of the first, midpoint, and last mission, the player receives a message from the AI character in the chapter. If the player is encountering them for the first time, they will give a very brief introduction. Otherwise, they may comment on past events (player defeating them) and their wishes to stop the player in their tracks by defeating the player. When the battle is over, the responses from the character differs depending on the outcome.

## Trivia

* After completing the Melkov chapter on normal difficulty, the warzone mission features a natural 4-star air unit that, oddly, has been demoted to 3 stars. The stats of the air unit is also reduced down from what it naturally is.
	+ For some reason, the stats have been reduced so much that even though it is a natural 4-star unit with only 3 stars, its stats are weaker than normal 3-star air units and is almost on par with natural 1-star units.
	+ The player can also find a demoted natural 5-star artillery in the warzone mission for Quast on normal difficulty.
* In the past, only normal difficulty existed. When the other difficulty levels were added, all chapters rewarded units when completed just like the normal difficulty with the exception of epic difficulty.
* When the epic difficulty was first released, competing every single mission actually failed to yield enough unit parts to craft the units shown on the parts, all stopping at a little over 40 parts out of the 100 needed with no other way to obtain more unit parts. The developers later filled in the missing parts and awarded the appropriate amount of parts to players who already completed the epic campaign.