Unlockables and Secrets

Unlocking COs
Spoilers

Nell: Complete the Advance Campaign
Grit: Choose Max for “Max Strikes!” and Max for “Blizzard Battle” to play “History Lesson” and complete the Campaign
Kanbei: Complete the Campaign
Sonja: Clear “Kanbei Arrives” within 8 days, “Mighty Kanbei” within 10 days and “Kanbei’s Error?” within 12 days to play “Divide and Conquer”, “Sonja’s Goal” and “Sami Marches On” and complete the Campaign
Eagle: Choose Sami for “Captain Drake”, “Naval Clash”, “Battle Mystery” and “Wings of Victory” to play “Rivals!” and clear the Campaign
Drake: Choose Andy for “Captain Drake”, “Naval Clash”, “Battle Mystery” and “Wings of Victory” and clear the Campaign
Sturm: Complete the Campaign and purchase all other COs except for Nell

Game Modes
Spoilers

Advance Campaign: Complete the Campaign

Campaign Secrets
Spoilers

Dogfights: Clear this map in 2 days to get special dialogue
Special Intel: Clear every Field Training mission and return to the mode to play this map
Olaf’s Navy: Win the map by rout (instead of HQ capture) to play “Olaf’s Sea Strike”
Blizzard Battle: Play the map with Max to play “History Lesson”
Kanbei Arrives, Mighty Kanbei and Kanbei’s Error: Clear these maps within 8, 10 and 12 days to play “Divide and Conquer”, “Sonja’s Goal” and “Sami Marches On”
Captain Drake, Naval Clash, Battle Mystery and Wings of Victory: Play all four of these maps with Sami to play “Rivals”
The Final Battle: Your allied COs depend on what path you took throughout the campaign.

COArmyCriteria
OlafBlue MoonClear "Olaf's Sea Strike"
GritBlue MoonClear "History Lesson"
MaxBlue MoonDefault commander for Blue Moon
EagleGreen EarthClear "Captain Drake", "Naval Clash", "Battle Mystery" and "Wings of Victory" with Sami
KanbeiYellow CometClear "Divide and Conquer", "Sonja's Goal" and "Sami Marches On", don't unlock Eagle
DrakeGreen EarthClear "Captain Drake", "Naval Clash", "Battle Mystery" and "Wings of Victory" with Andy, don't unlock Kanbei
SamiGreen EarthDefault commander for Green Earth

Maps
Spoilers

“Nintendo” Map: Hold L+R when starting Design Maps to load a special map.
Secret Dialogue: When in Design Maps, attempt to place a unit in an illegal position 50 times in a row. You will get some special dialogue from Nell.

Golden Menus
Spoilers

Field Training: Clear every map in Field Training
Campaign: Clear the Advance Campaign
War Room: Clear every single map in the War Room
Battle Maps: Purchase every single item from Hachi
Rank: Achieve Rank 1: “Gold Dragon”
Records: Achieve an S-Rank on every single War Room map
Stats: Meet the requirements for a golden menu for both “Rank” and “Records”