How do you get blueprints in dead trigger 2?

In Dead Trigger 2, blueprints can be obtained by completing missions and events, participating in daily challenges, or opening supply crates. Additionally, you can earn them by defeating specific bosses or through special in-game activities. Keep an eye out for limited-time events, as they often offer blueprints as rewards. Regularly checking the game's shop may also yield blueprints for purchase using in-game currency.