1st add this to your mov.csv in the mod builder tab
replace mapnamehere with your map name EX: my undead town would be undead_town
2nd download this
3rdopen the file and search for MAPNAMEHERE (line 457)
so this line
replace mapnamehere with your map name
CHOICE_BUTTON_VIS( 1, "Fight alone", exec "map MAPNAMEHERE"; , when( !localvarBool( ui_hideBack ) ); )
EX: my undead town would be undead_town
Or if your .ff file is named nazi_zombie_NAMEHERE. Then it would be exec "map nazi_zombie_MAPNAMEHERE"
save compile mod.ff done
Edit: you can change Fight Alone to whatever you want.