The gameplay loop is all about recruiting operators, leveling them up, and using them to complete missions and defeat bosses. You'll need to collect LMD, the game's currency, to recruit new operators and upgrade your existing ones - and let me tell you, it's a thrill to get your hands on some rare LMD! With each passing level, the challenges get tougher, and you'll need to strategize to win.
The key to getting LMD fast is to complete daily missions and events, which give you a boost of LMD and other rewards. You can also collect LMD from the game's many stages and chapters, and don't forget to log in daily to get your login bonuses! The more you play, the more LMD you'll get, and the stronger your operators will become.