How can I unlock next level when previous level is completed has completed

Hey Everyone, I am creating a FPS zombie shooter game and I want to unlock level 2 after level 1 has been is completed and unlock level 3 after level 2 has been completed. I also want that when the game is closed and then opened again the player who is playing the game will get it unlocked if he/she has completed it before closing the game.
I am still a beginner so please can you provide with some detail and blueprint.
Thank you in Advance!

Hello @DIVYANSH_98 ,

What you have to do is just save the character progression, and load the chara progression when you want to select level, and If the character progression is 2, then level 2+1 should be also unlocked.

You can learn save and loading system by reading this unreal docs
Saving and Loading Your Game | Unreal Engine 4.27 Documentation

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