I did some digging in google but found literally nothing, I know it has to do something with the diamond blocks in the map but idk
there are 4 buttons that you need to press in a specific order: 1 - the house with the bunker-bed, there is a button on the roof near one of the upper windows. 2 - Driver seat in the bus. 3 - In a corner behind the desk in the bluehouse 2nd floor 4 - In a corner next to a chest, in the top floor of the garage in the blue house. Button 2,3 and 4 makes a sound if you pressed em correctly, the first button doesnt. After pressing the 4th button head outside to the backyard of the bluehouse and you see a stoneshed with a single metaldoor, you can now open that door if you pressed correctly and the knife will be in there o.o
You don't need to press e on the buttons, you can just shoot them: Spoiler Logs/Console: Miscellaneous: ent_teleport player to tp and the accelerate vars were buffed.