1) Play a game of Bus Depot survival and end it
2) Go to Grief on Town (Custom Games)
3) Click on your name and go to Player Channel
4) Go to Recent games and Click on the game of Bus Depot Survival
5) Hit B and there you go!

1)Play a game of Bus Depot Grief and end it
2)Go to Town Grief in Custom Games
3)Click on your name and go to Player Channel
4)Click on Bus Depot Grief (the image is black)
5) Press B and there you go!
6) Start the game