New System Features:
1. The campaign system has been updated with a tech tree system, where you can unlock new aircraft, weapons, buffs, and support items.
2. Aircraft, weapons, and support items unlocked in the tech tree can be purchased in the campaign mode shop.
3. Each time you enter a campaign mode mission, you will bring items from your hangar into battle.
4. Three new campaign mode missions have been added, one of which is a special commemorative mission.
5. Completing campaign mode missions will earn you up to 3 stars based on your performance, which can be used to unlock content in the tech tree.
Previous System Adjustments:
1. Support items have been changed to a counting system.
2. The save structure has been adjusted. After this update, old save data that is incompatible with the new system will be automatically deleted, and a new save structure will be built. This will cause previous Endless Mode save data to become invalid. I apologize for this and ask for your understanding.
3. Item prices in Endless Mode have been adjusted.
