Age of Wonders: Planetfall

This is a maxed out rep with any NPC faction. Not for other players. You can reach it fastest by buying units but the easiest way to lose your rep is to accept quests you don't finish. You don't seem to lose any points for declining a quest so I did that endlessly. I instead focused on completing demands (by simply giving them electricity or cosmite) and buying units as stated before. This is one step towards gaining a few achievements such as buying 3 dwellings or planetary unification.