The following has been added to the game:
- the random appearance of keys required to complete the game;
- new door opening mechanics;
- spotlight;
- adjust mouse sensitivity;
- improved effects on the character's camera;
- changed shaders for materials;

In addition, the size of the bunker was increased. Added a new room that was previously closed as well as a new corridor with 3 new rooms. After all the work was done, work was done to optimize the game. 2 more optimizations are planned in the future.