In addition to finding intel on Orcs and learning their worst fears you'll also learn the ability to amass your very own army across the course of the game, opening up a particular section of the menu that tracks the highest ranking creatures, and turning it into something of a game of chess. You'll start to factor in the various power-plays within the Orcish ranks, noticing that if you take your revenge on a certain target then another will rise to power - although if you go to said Orc first and turn them over to your side, you've suddenly planted a double-agent amongst their ranks for later. The fact this comes at the mid-point of the game when you're a dab-hand at infiltrating compounds, igniting campfires to take out nearby Orcs before whipping out your bow to headshot any scarpering remainders is a brilliant show of restraint that lengthens the campaign considerably.