1. First, clear all items from backpack 1 and 3.
2. Remove the bomb from backpack 2, then put in the items bought with GP: *, hand * and *.
4. For characters you have, switch them to the ones bought with GP.
5. Cancel all items bought with CF, such as business cards, ammo clips, spray paint, etc.
6. Then enter the game (Mystery Camp, set to not joinable). Do not touch the keyboard or mouse after entering the game. Wait for five seconds and check if the red dots on the radar are moving. If they move, quickly exit, prepare again, and start the game. Repeat this several times and it will succeed. The monsters won't move, but they can attack.
