first, make sure you have the console enabled in advanced option


step 1: open the console
step 2: type showtriggers 1
step 3: type showtriggers_toggle
done!

step 4: type in console mat_fullbright 1
step 5: play any music of your choosing
step 6: play with friends
step 7: change gamemode to sandbox
step 8: spawn friendly npcs
step 9: just dont play a horror map



thanks gamers and have a nice day