How to Get to Expert Mode in SDGO
- 1). Click on the first mission, titled "Hong Kong Downtown." Click "Beginner." The mission will begin.
- 2). Complete the on-screen mission objectives to complete the level. The default difficulty setting is beginner. When you complete the beginner difficulty of each level, the proceeding level will be unlocked along with weapons and armor upgrades and the next difficulty setting for the level you complete.
- 3). Continue completing levels until all missions and difficulties are unlocked.
- 4). Click on a mission of your choice. Click "Expert" to play the mission in that mode. Completing a level in expert mode will unlock expert weapons and armor upgrades.
Source...