For the sake of everybody who plays, from the casual gamer to the hardcore gamer, this walkthrough was written by playing on the Normal difficulty setting.

This walkthrough will show you how to achieve the Silent Assassin ranking for each mission. What this means is you will not be able to kill anybody except your intended targets. You cannot even fire a weapon.

What this walkthrough won't do is tell you to collect weapons, unless you need it. For example, if there is a shotgun in a room, but you don't need it to complete the mission, I won't tell you to get it. It's best to go through a mission, beat it, then replay the mission to collect any weapons you missed for your collection.

Second, I won't tell you to just gun your way through a mission, as that doesn't really require a walkthrough.

For the maps, the positions of enemies and civilians may differ from yours, depending on how fast you play through the game. The general map is the same, though, so use it to plan strategies or to help you backtrack, but if a map here says an enemy is in one room, don't rely on it completely.