LB:EF - Missions 6, 7 and 8
The missions start to get longer and more involved at this point, with more primary and secondary goals per mission. Also, opposing units start attacking you more often, so the difficulty is increased. While attacking back is an option, the units you command now are not fighters of any sort and will die very easily. If main characters die, the missions are lost. It's best simply to avoid hostile units unless attempting to turn them neutral or convert them.
Recruit friends and build while avoiding violence.
Non-violently defend your chapel (using your singers to turn hostile units neutral) from a gang and a small tank(!), recruit friends, and build. (Yeah, you might wonder how you non-violently defend the chapel from the tank. Well, if you play the game, hopefully you'll discover it through trial and error like I did.)
Recruit lots of friends (25) within a time limit, train a disciple, and build.
PS: 22 (previous score of 19 + 1 per mission)
LB:EF - The first few missions
LB:EF - Tutorial
LB:EF - the manual
New S&B series: "Left Behind: Eternal Forces" in detail
The left's lies about "Left Behind: Eternal Forces"