So I want to play a warpriest of Milani in this AP. What archetype should I pick? If it helps, I'm planning on playing a Devilspawn Tiefling (+2CON, +2WIS, -2CHA) Rolled Stats as follows, can be assigned however: 17, 14, 14, 13, 13, 13.
Liberty's Blade jumps out at me immediately. You lose very little, one blessing and a reduced-power Channel Energy(which you shouldn't be using much anyway) and in return you can channel to do more damage vs. devils, and you get devilbane and devil-defiant as options for sacred weapon/armor. In this AP, it seems really thematic and unusually powerful.
Sacred Fist is another that stuck out to me. It's a pretty big alteration, but running around unarmored and fighting with your fists seems like it'd make sneaking around under the Dottari's nose a lot easier than if you're running around in chainmail with a morningstar.
Champion of the Faith is suggested in the Player's Guide. I'm open to the idea if anyone wants to make a case, but the archetype has never impressed me overmuch.
I guess Cult Leader or Proselytizer might make some thematic sense, but...eh. Neither one seems that interesting to me.
I'm thinking about trying to go into Sentinel or Exalted eventually, take that into consideration as well.