1. Complete one week first : Make sure you have successfully cleared the level once in the main plot.
2. Enter the second week of program selection :
- Skip loading game option when starting second week.
3. Select difficulty :
- Directly click the "Difficulty" option in the game menu to enter the game.
4. Difficulty upgrade :
- Enemy attributes, level design and challenges in hard mode will be significantly enhanced, making it more severe than normal difficulty.
5. Achievements are not affected :
- Converting to hard mode will not affect your previous achievements for the week.
6.Challenges and Rewards :
- Increasing hardness means greater challenges, and may also bring more sense of accomplishment and rewards.
Through such a setting, players can continue to enjoy the in-depth experience of the game while satisfying their desire for challenge.